500+ Digital Electronics Questions and Answers

Explore 500+ Digital Electronics questions and answers covering logic gates, number systems, Boolean algebra, combinational circuits, sequential circuits, flip-flops, counters, registers, and digital system design.

This collection includes technical questions related to:

Number Systems
Binary Arithmetic
Logic Gates
Boolean Algebra
Karnaugh Maps (K-Maps)
Combinational Logic Circuits
Sequential Logic Circuits
Flip-Flops
Counters
Registers
Multiplexers and Demultiplexers
Encoders and Decoders
Memory Devices
Digital System Design

The questions cover digital electronics fundamentals, logic simplification techniques, digital circuit analysis, design concepts, memory systems, timing circuits, troubleshooting methods, and practical applications commonly used in electronics engineering and computer systems.

These Digital Electronics questions are useful for engineering students, diploma holders, electronics technicians, competitive exam aspirants, and professionals preparing for technical interviews, academic examinations, and electronics engineering careers.

Browse the Digital Electronics questions below and strengthen your understanding of digital circuits and modern electronic systems.

500+ Digital Electronics Questions

S.No.	Digital Electronics Question
1	The ___ latch is an asynchronous flip-flop which can be constructed from two NAND gates
2	The different types of flip-flops are ___
3	A device that exhibits two different stable states and functions as a memory element in a binary system is ___
4	In this type of counter, the output of the last stage is connected to the ___
5	In this type of counter, the complement of the output of the last stage of the shift register is fed back to the ___
6	In this type of register, data can be shifted in either right or left direction by using ___
7	This type of register accepts inputs data simultaneously and output is ___
8	This type of register accepts inputs data serially ___
9	There are ___ basic types of shift registers
10	A register can also be used to provide data movements ___
11	It does not have any external gate ___
12	An n-bit register has a group of n flip-flops and some logic gates ___
13	In a DAC, the possible number of digital input is ___
14	An AND matrix is used to form ___
15	Which of the following is the advantage of PLD over ICs?
16	Gated S-R latch is a combination of which latch and gate?
17	In flip-flop the ___ arrow shows positive transition on the clock
18	It is a single input version of J-K flip-flop formed by tying both the inputs of ___
19	In asynchronous flip-flop, ___ and clear pin shows negation
20	A counter with 10 states ___
21	The major block(s) of the dual- slope ADC ___
22	To start the conversion in successive approximation DAC the programmer sets the MSB to ___
23	The characteristics of a DAC, which are generally specified by the manufacturers ___
24	The number of resistors required for an N-bit DAC is 2N in the case of ___
25	The total current can be converted into the corresponding voltage by using an ___
26	It contains an equal resistor or current source segment for each possible value of DAC output ___
27	A digital communication system is used to transmit messages, which are in the ___
28	The number of states through which the counter goes is also known as ___
29	In which of the following types of counters, the flip-flops do not change states at exactly the same time?
30	A PLA consists of two-level ___ circuits on a single chip
31	When a circuit is self- correcting?
32	___ and Clear should not be 0 at the same time
33	Asynchronous inputs, just like synchronous inputs, can be engineered to be ___
34	The normal data inputs to a flip-flop (D, S and R, J and K, T) are referred to as ___inputs
35	The characteristic equation of any flip-flop describes the ___
36	There are ___ basic types of flip-flop based on clock trigger
37	A ___ circuit is not suitable in the synchronous circuit design because of its transparency nature
38	A ___ is a circuit, which can remember values for a long time or change values when required
39	___ multiplexers can be constructed from smaller ones
40	The Boolean expression for the multiplexer can be derived by the ___
41	When more than one input can be active, the priority ___ must be used
42	Decoders often come with an enable signal, so that the device is only activated when the enable E equals to ___
43	Codes are frequently used to represent ___
44	The four common and useful MSI circuits are ___
45	___ can be performed through addition using the 2’s complement method
46	BCD-to-Excess-3 Code Conversion is a example of a ___
47	Circuits that are more complex can be built using the ___ method
48	There are two types of parity ___
49	While designing a digital system, the main objectives are ___
50	IC chips based on packaging density are ___
51	The steps required for the analysis of combinational circuits are ___
52	In ___ circuit, the output depends on both the present and the past inputs
53	In a combinational circuit, each output depends entirely on the ___ inputs to the circuit
54	It is a programmable array of logic gateson a single chip in AND-OR configuration ___
55	It consists of two-level AND-OR circuits on a single chip ___
56	In this logic, output depends not only on the current inputs but also on the ___
57	It is a bi-directional counter capable of counting in either of the ___
58	It is a counter where the flip-flops do not change states at exactly the same time, as they do not have ___
59	It is a sequential circuit that cycles through a sequence of states ___
60	It is a circuit, which can remember values for a long time or ___
61	It is a circuit, which has a number of input lines and selection lines with one output line ___
62	It compares two n-bit values to determine whether one of them is greater or if they are equal ___
63	This converter deals with converting binary code to gray code ___
64	It is a very useful combinational circuit used in communication systems ___
65	It directs data from input to a selected output line ___
66	It is the converse of decoding and contains ___
67	A code converter circuit converts the code of one form to another form ___
68	It is a circuit, which subtracts two inputs each of one bit ___
69	It is used to subtract two inputs having more than one bit ___
70	It is a simple combinational digital circuit built from logic gates ___
71	Entries known as _______________ mapping
72	In case of XOR/XNOR simplification, you have to look for the following ___
73	There are many situations in logic design in which simplification of logic expression is possible in terms of ___
74	Using the transformation method discussed, you can realize any POS realization of ___
75	___ expressions can be implemented using either (1) 2-level AND-OR logic circuits or (2) 2-level NAND logic circuits
76	It should be kept in mind that don’t care terms should be used along with the terms that are present in ___
77	Don’t care conditions can be used for simplifying Boolean expressions in ___
78	How to find the Simplest SOP expression?
79	Each group of adjacent Minterms (group size in powers of twos) corresponds to ___
80	Product-of-Sums expressions can be implemented using ___
81	The prime implicant, which has at least one element that is not present in any other implicant, is known as ___
82	A TTL logic circuit would use which of the following types of elements?
83	Logic families are identified by which of the following means?
84	Under which of the following conditions will the output of ___
85	Which of the following methods will clear the register of old information no longer needed?
86	Which of the following statements describes parallel transfer?
87	What term identifies a series of FFs designed to temporarily store information?
88	Which of the following conditions must exist to set FF 3?
89	At any given time, how many flip-flops may be set?
90	Which of the following types of counters is shown in the figure?
91	What is the maximum binary count that will be shown before all the flip-flops reset? digi
92	Under which of the following conditions will the output of the AND gate be HIGH?
93	What type of counter is shown?
94	What is the maximum count that this counter is capable of holding?
95	What is the main disadvantage of using this circuit with a high frequency input?
96	Assume all lights are ___
97	What type of circuit is shown?
98	Counters may be used for which of the following purposes?
99	What is the modulus of a 3-stage binary counter?
100	Which of the following types of clocks would probably be used in ___
101	Which of the following types of circuits will produce a stable clock when ___
102	Which of the following statements is true regarding astable multivibrators used as clocks?
103	The circuit which generates a timing signal to control operations is ___
104	The flip-flop shown in the figure may be used in place of which of dfollowing flipflops?
105	Which of the following statements is correct concerning D flip-flops?
106	Which of the following statements is true concerning CLR and PR pulses to ___
107	An inverter on the clock input has which of the following effects on the D flipflop?
108	What is the purpose of a D flip-flop?
109	What are the inputs to a D flip-flop?
110	A T flip-flop is used primarily for which of the following functions?
111	Which of the following statements describes a toggle flip-flop?
112	When, if ever, will the outputs Q and Q of an R-S flip-flop be the same?
113	Flip-flops may NOT be used for which of the following operations?
114	Flip-flops are what type of multivibrators?
115	What type of complement is performed by X-OR gates 1 and 2?
116	Which of the following statements describes the method used in computers to
117	How many full adders are required to form a parallel adder capable of ___
118	What is the largest sum that can be obtained from a full adder?
119	Under which of the following conditions will outputs D and E both be HIGH?
120	If A and B are 0 and C is 1, what will be the outputs at D and E?
121	What type of circuit is shown in the figure?
122	Which of the following statements describes the difference between ___
123	What is the largest sum that can be obtained from a half adder?
124	What should the output be between times ___
125	Which of the following NAND gate input combinations and output function is missing?
126	Which of the following gates produces a HIGH output when any or all of the inputs are LOW?
127	Which of the following is the standard logic symbol for a NAND gate?
128	Which of the following symbols represents an inverter?
129	What is the purpose of an inverter?
130	Which of the following Truth Tables correspond to the gate in the figure?
131	What is the output Boolean expression for the gate?
132	Which of the following gates is represented by the symbol in the figure?
133	Which of the following symbols represents the output Boolean expression RZ?
134	Which of the following output Boolean expressions is/are correct for an AND gate?
135	Which of the following logic gates requires all inputs to ___
136	What is a logic gate?
137	A chart that lists all possible input combinations and resultant output is ___
138	If the letter X represents an input to a logic device, what logic state of ___
139	Of the following examples, choose the one that represents ___
140	Which of the following examples represents positive logic?
141	Which of the following statements describes logic polarity?
142	Which of the following methods is used to represent the ___
143	Logic is the development of a reasonable conclusion based on ___
144	Perform the below indicated operation ___
145	Add the BCD numbers ___
146	Add the below BCD numbers ___
147	Add the following BCD numbers ___
148	Which of the following numbers is NOT a valid BCD number?
149	Which of the following numbers has the highest decimal value?
150	Convert the following numbers from BCD to decimal ___
151	Convert the below numbers to BCD ___
152	How many binary digits are required to represent the ___
153	What term describes the use of four binary digits to ___
154	Convert the below hex numbers to their decimal equivalents numbers ___
155	Convert the following hex numbers to their decimal number equivalents ___
156	Convert the following hex numbers to their ___
157	Convert the hex numbers to their decimal equivalents ___
158	Convert the following octal numbers to their ___
159	Convert the octal numbers to their decimal numbers ___
160	Convert the octal numbers to ___
161	Convert the octal numbers to their ___
162	Convert the octal numbers to their decimal ___
163	Convert the below binary number to decimal ___
164	Convert the following numbers to decimal ___
165	What is the decimal equivalent of the decimal ___
166	Convert the below hex numbers to ___
167	Convert the hex numbers to octal ___
168	Convert the following hex numbers to binary equivalent numbers ___
169	Convert the hex numbers to ___
170	Convert the hex numbers to binary ___
171	Convert following number to hex ___
172	Perform the conversion method below to hex ___
173	Convert the following octal numbers to their binary number equivalents ___
174	Convert the following octal numbers to their binary equivalents ___
175	Convert the octal numbers to their binary equivalents ___
176	Convert the below binary numbers to their hexadecimal equivalents ___
177	Convert the binary numbers to their hexadecimal ___
178	Convert the binary numbers to their hexadecimal equivalents ___
179	Convert the binary numbers to their octal number equivalent ___
180	Convert the following binary numbers to their ___
181	Convert the binary numbers to ___
182	Convert the below binary numbers to their octal ___
183	Convert the binary numbers to their octal ___
184	Convert the binary numbers to their ___
185	What is the hex equivalent of the below ___
186	What is the hex equivalent of the ___
187	Convert the below ___
188	Convert below number to hex (three places) ___
189	Convert the below case to hex ___
190	What is the hex equivalent ___
191	What is the hex equivalent of ___
192	Convert the following number to octal (four places) ___
193	Convert the following case to octal (three places) ___
194	Convert the below to octal ___
195	Perform the division method to convert decimal numbers to octal ___
196	Use the division operation to convert decimal numbers to octal ___
197	Use the division method to convert decimal numbers ___
198	Convert the following case ___
199	Convert the following into a binary number ___
200	Convert the below number to binary ___
201	Perform the indicated operation ___
202	To convert fractional decimal numbers to binary, multiply the number by ___
203	Use the division method to convert decimal numbers to ___
204	Perform the division operation for the below ___
205	Perform the division method for the following ___
206	Which of the following terms describes the first remainder when ___
207	To begin conversion of a decimal number to ___
208	Perform the below operation and find the difference ___
209	When a borrow is taken from a hex number, that number is ___
210	Perform the add operation ___
211	Find the correct answer for the below ___
212	Find the sum for the below ___
213	List the MSD and LSD of the ___
214	The decimal number 256 is equal to what power of 16?
215	What is the decimal value of the highest symbol in the hex system?
216	Which of the following numbers does NOT represent a hexadecimal value?
217	Perform the subtraction method for the following ___
218	Perform the subtraction method for the below ___
219	Perform the subtraction operation for the following ___
220	Which, if any, of the following is a difference between ___
221	Perform the addition operation method for the below ___
222	Perform the add operation for the below ___
223	What is the sum of the below ___
224	Find the sum of ___
225	Perform the addition for the following ___
226	What is the sum ___
227	What is the sum of ___
228	Which of the following symbols is the least significant digit of ___
229	What is the decimal value of ___
230	One octal digit is represented by how many binary digits?
231	Which of the following equations is correct?
232	Which of the following is NOT a valid octal number?
233	What is the radix of the octal number system?
234	Solve the subtraction problems and indicate ___
235	Solve the subtraction problems and indicate the ___
236	Solve the subtraction problems and indicate the sign of the difference ___
237	In the previous problems, what is indicated by the ___
238	Subtract the below decimal numbers using R’s complement ___
239	Subtract the below decimal numbers using R’s complement method ___
240	Which of the following numbers is the R’s complement of ___
241	Which of the following statements regarding the forming of ___
242	Perform the R’s-1 complement of the following ___
243	Which of the following numbers is the R’s-1 complement of ___
244	Which of the following solutions is correct when ___
245	Which of the following examples is the correct step when ___
246	Which of the following parts of a subtraction problem must be ___
247	What is the R’s ___
248	What is the R’s-1 complement ___
249	What is the R’s-1 complement of ___
250	Subtraction is accomplished by which of the following methods in ___
251	Subtract the following ___
252	Subtract the below ___
253	Subtract the following decimal numbers ___
254	In binary subtraction, what is the value of a borrow when it is ___
255	Which of the following rules of binary subtraction requires the use of a borrow?
256	In the following example, which number is the minuend?
257	Which of the following rules of binary subtraction is correct?
258	Add the below decimal numbers ___
259	Add the below operand ___
260	Add the below question ___
261	Add the operation provided below ___
262	Add the following question ___
263	Which of the following combinations of binary addition is INCORRECT?
264	Which digit is the MSD in the binary number 1011001?
265	Which of the following powers of two indicates a fraction?
266	The decimal number 1 is equal to what power of two?
267	What is the decimal equivalent ___
268	Positional notation for the binary system is ___
269	What are the (a) radix and (b) the symbols used in the binary number system?
270	The result of subtraction is known as the ___
271	A borrow is required for the subtraction in which of the following examples?
272	In subtraction, the (a) is subtracted from ___
273	Add the following ___
274	Identify A through D in the following example ___
275	What term is defined as a number to be added to a preceding number?
276	What is the MSD of ___
277	What term describes the symbol that separates the ___
278	Which of the following numbers is a mixed number?
279	What is the value of 5 times ___
280	The power of a number is indicated by the ___
281	The 1 in 157210 is equal to what power of ten?
282	How many decimal units are represented by ___
283	Using positional notation, what two factors determine the value of a number?
284	A number system uses the symbols ___
285	What is the base of a number system using all the letters of ___
286	What term describes the number of symbols used in a number system?
287	Which of the following symbols is NOT an Arabic figure?
288	What is a number?
289	What term describes a single object in a modern number system?
290	Modern number systems are built around which of the following components?
291	The sign information has to be encoded along with the ___ to represent the integers completely
292	In direct conversion from binary to hexadecimal, if the last group does not have 4- bits, then it is padded with ___
293	In which conversion the product of number 16 raised by the location and then add all the products to get the final decimal value?
294	Conversion from any base to decimal base is done by ___________
295	In a sequential memory, the words are stored in and read out in a ___
296	A PROM can be programmed only once after which its contents are permanently fixed as ___
297	A ___ command signal is applied to the write-control input terminal
298	The ___ of the desired memory location is applied to the address input terminals
299	The word to be stored is applied to the data ___ terminals
300	The chip select signal is applied to the ___
301	Number of stored bits per unit area, which determines overall storage capacity and ___
302	A memory stores data for processing and the instructions for ___
303	A register can also be used to provide ___
304	An n-bit register has a group of ___ flip-flops and some logic gates
305	The EEPROM chip is physically similar to the chip ___
306	The matrix is formed by connecting one diode along with a switch between each ___
307	___ organization is essentially an array of selectively open and closed
308	The EPROM eraser will emit ___
309	Erasing EPROM programming is accomplished by using ultraviolet light that belongs to the UVC range and has ___
310	ROMs are well suited for the ___ manufacturing processes
311	A ___ is a semiconductor memory device used to store information
312	In a sequential memory, the words are stored in and out in a ___
313	A row decoder decodes the ___ location
314	Memory can be classified on the basis of the ___ technology used
315	A memory in which the information stored can be erased and new information is stored is ___
316	Read Only Memory (ROM), as the name suggests, is meant only for ___
317	A register can be either static or ___
318	This is the maximum time from the start of the valid address of the read cycle to the time when the valid data is ___
319	This is the minimum length of the write pulse ___
320	Memory is a circuit, which is used to store ___
321	Each product term of a group, wâ€².x.yâ€² and w.y, represents the ___ in that group
322	The K-map based Boolean reduction is based on the following ___
323	There are ___ cells in a 4-variable K-map
324	There are ___ Minterms for 3 variables (a, b, c)
325	A Karnaugh map (K-map) is an abstract form of ___
326	Maxterms of a function are the terms for which the result is ___
327	Canonical form is a unique way of representing ___
328	Maxterm is the sum of ___ of the corresponding Minterm with its literal complemented
329	It is a sum term or a logical product (AND) of several sum terms ___
330	It is a single literal or a logical product (AND) of several literals
331	A variable on its own or in its complemented form is known as ___
332	For a function F, the complement of this function Fâ€² is obtained by ___
333	The Boolean expression for the output F1 will be ___
334	In the truth table formation, inputs are taken as A1A0 for A input and ___
335	A ___ is a table, which consists of every possible combination of inputs and its corresponding outputs
336	For an every x, y in B,
337	Every valid Boolean expression (equality) remains valid if the operators and ___
338	For every x, y in B ___
339	Boolean algebra is named after ___, who used it to study human logical reasoning
340	When a logic circuit diagram is given, you can analyse the circuit to obtain the ___
341	When one of the inputs of two-input XOR gates is Logic Low, the output will be the ___ as the other input
342	When one of the inputs of two-input a XOR gate is Logic High, the output will be ________ of the other input
343	For multi-input XNOR gate, the output is Logic High when the total number of Logic High in the inputs signals is ___
344	For multi-input AND and NAND gates, the unused input pin should not be left ___
345	In addition to the NOT, AND, OR and XOR gates__________ more common gates are available
346	The XOR output is 1 if the inputs are ___
347	A gate related to the OR gate is the ___
348	The OR gate output is 0 only when both the inputs are ___
349	A basic OR gate is a two input, ___ output gate
350	In the AND gate, the output is ‘High’ or gate is ‘On’ only if both the inputs are ___
351	A basic AND gate consists of ___ inputs and an output
352	The output of the NOT gate is always the ___of the input
353	The basic logic gates are NOT, AND, ___
354	In digital electronics, the ‘ON’ state is often represented by 1 ___
355	Logic High at the output is treated as gate ___
356	How can you represent = in 8-bit EBCDIC representation?
357	Which sign bit is used for representing the positive sign in floating point representation?
358	In, subtraction of positive numbers using radix complement representation ___
359	Which of the following case is known as end-around carry addition?
360	Which of the following cases leads to the overflow condition in addition using 2’s complement?
361	In subtraction of binary numbers, if the subtrahend digit is greater than the ___
362	What is the 9’s complement of (0.3267)10?
363	In which type of conversion, binary numbers can be converted into equivalent octal numbers by ___
364	To convert ___, write the number to be converted, placing each digit under the proper position
365	How -5 is represented in hex format in 2’s complement in 8-bits?
366	In N-bits, you can represent the signed integers ranging from ___
367	How can you represent (08)10 in BCD?
368	The MSB of ___ is same as the MSB of the corresponding Gray code
369	Which of the following is not correct regarding EBCDIC?
370	What will be the result in BCD form if two binary numbers 599 and 984 are added?
371	What is the 8-bit EBCDIC representation of alphabet M?
372	Why the 8-bit (MSB) is added in EBCDIC?
373	ASCII code is required for representing more than ________ characters
374	EXOR is the __________ of the binary number
375	Which of the following code is also known as reflected code?
376	What is the decimal representation of decimal number 5?
377	In straight binary code, N-bits or N binary digits can represent ___different values
378	Binary Coded Decimal or BCD is also known as ___
379	1000001 represents as (65)10 in which code?
380	The binary representation of 0.875 is 0 01111110 11000000000000000000000 in ___ presentation
381	Floating-point numbers are those numbers, which include ___
382	What does the leftmost bit represents, according to the IEEE standards?
383	Which of the following condition is true for determining overflow condition in 2’s complement?
384	For subtraction of binary number, subtract the ___
385	Which one of the following is the type of complement for each base R system?
386	In ___________________, to encode a negative number, first the binary representation
387	2’s complement is used to represent signed integers, especially __________ integers
388	(FA)16 is the ________ one’s complement representation of -5
389	What are the two ways of representing the 0 with signed magnitude representation?
390	What is the corresponding hex number of the signed magnitude -127?
391	What is used to represent the signed magnitude?
392	Which one is the possible technique for representing signed integers?
393	The sign information has to be encoded along with the ___
394	What is the hex equivalent of 916, a 4-bit binary number?
395	In direct conversion from binary to hexadecimal, if the last group does not have 4- bits, then it is ___
396	What is the octal equivalent of 58, 3-bit binary number?
397	Binary numbers can be converted into equivalent octal numbers by making groups of three bits ___
398	In which conversion the product of number 16 raised by the location and then add all the products to ___
399	Which method is used to convert a number from an octal base to decimal base?
400	Conversion from any base to decimal base is done by ___
401	A digit in base R will have a range from ___
402	How can you represent a decimal point?
403	In binary number system a digit ranges from ___
404	Why the decimal number system is also called as positional number system?
405	What does a decimal number represents?
406	Which byte of an instruction is loaded into IR register?
407	What do contents of a stack pointer specify?
408	What is the percent resolution of a 12 bit BCD D/A converter?
409	What is the number of non-zero states for a 16 bit binary D/a converter?
410	The contents of the command register are 23 H, then port C ___
411	A pair of 2114s can store ___
412	Status register in the 8156 is read with ___
413	Status register in the 8156 contains information about ___
414	When a bit is O in a DDR, it makes the corresponding port pin an ___
415	In 8355, The ROM is organized as __________words of 8 bits each
416	The timer is a presettable 24-bit counter that counts TIMER IN pulses ___
417	In micro-processors like 8080 and 8085, the __________ cycle may have from one to five machine cycle
418	SAP-I has __________ T states, period during which register contents change
419	A fetch cycle is the ___
420	The mnemonics used in writing a program is called ___
421	A state during which nothing happens is known as ___
422	A secondary memory is ___
423	EAROM memory is ___
424	In magnetic film memory, the memory element consists of ___
425	A charge coupled device has ___
426	MOS family used extensively where lowest power consumption is necessary is ___
427	MOS family that dominates the LSI field is ___
428	The fastest logic family used in high speed applications is ___
429	Which of the following is the most widely used bipolar family ___
430	A micro-computer has a 64 K memory ___
431	In LIFO ___
432	Flag bits in arithmetic unit provide ___
433	Once the information is placed into a read-only memory ___
434	Micro-processors were introduced in the year ___
435	Micro-processors find applications in ___
436	Which statement about the central processing unit is correct?
437	Which of the following is used extensively where ___
438	The __________is ultraviolet light erasable and electrically programmable
439	A minterm is ___
440	The voltage needed for a TTL IC power supply is ___
441	What is the output of a NOT gate when its ___
442	Monolithic technology is widely used in the manufacture of ___
443	What term is used to refer to the positional value of a digit?
444	Write the octal number that come after 7 ___
445	The fan out of a 7400 NAND gate is ___
446	Current drawn when the number 8 is on an LED display is ___
447	The segments of a seven-segment display are lettered to a ___
448	Decimal number 937 in gray code is written as ___
449	Decimal 42 in XS-3 code is ___
450	The decimal value for the BCD coded number 00010010 is ___
451	When the input to a seven segment decoder is 0100, the number on display will be ___
452	Which multi-vibrator can be used as a clock timer?
453	Out of LCD and LED which display consumes the least power?
454	Which converter has a binary input?
455	Which of the following changes analog voltage to binary data?
456	Which of the following is a temporary memory?
457	Read and write capabilities are available in ___
458	Which mode is there in extracting information from storage?
459	Which family of logic circuits uses field effect transistors?
460	When all the seven segments of a display are energized, the number shown will be ___
461	DC forward voltage is needed to emit light in case of ___
462	The op.amp is used in ___
463	Which of the following is used as a data selector?
464	How many flip-flops are needed for a 4 bit counter?
465	A toggle operation is used ___
466	An index register in digital computer is register to be used for ___
467	An index register in a digital computer is used for ___
468	How many flip-flop circuits are needed to divide by 16?
469	Which circuit is used for a clock generator?
470	How many inputs can be supplied to a logic gate with a fan in factor of four?
471	The delay between successive bits for 9600 band rate is approximately 0.1 ms ___
472	Which of the following register pairs can be directly stored in memory ___
473	The radix of a hexadecimal system is ___
474	The decimal equivalent of the hexadecimal number E5 is ___
475	Which logic function has the output law only when both inputs are high?
476	Which logic gate is similar to the function of two parallel switches?
477	Which logic gate is similar to the function of two series switches?
478	According to Boolean algebra, 1+ A+B+C is equal to ____
479	Octal 16 is equal to decimal ___
480	Decimal 1932 when converted into 10’s complement will become ___
481	Decimal number 5436 when converted into 9’s complement will become ___
482	Binary 101010 is equivalent to decimal number ___
483	Which of these binary addition is incorrect?
484	Binary 1000 will be the result of which of the following ___
485	Which of the following binary product is incorrect?
486	Which of the binary addition is incorrect?
487	Which binary addition is incorrect?
488	The decimal equivalent of the binary number ___
489	Which of the following is decimal equivalent of the binary 1111111?
490	Which of the following represents the decimal form of binary 0.0111?
491	Which of the following is not valid in binary system?
492	Binary 1000 multiplied by binary 1000 gives ___
493	Binary 1111 when added to binary 11111 is ___
494	Binary 1111 when subtracted from binary 11111, the result in binary is ___
495	Binary 1010 in decimal system is equivalent to ___
496	If 4 in binary system is 100 then 8 will be ___
497	Decimal 15 in binary system can b e written as ___
498	A device that converts from decimal to binary numbered is called ___
499	The high voltage level of a digital signal in positive logic is ___
500	Which of the following can provide a digital signal?
501	The slow turning of a potentiometer is ___
502	In any flip-flop, when the Q output is 1, what is the state if the Q terminal?
503	The number of levels in a digital signal is ___
504	Storage of 1 KB means the following number of bytes ___
505	When an input signal 1 is applied to a NOT gate, the output is ___
506	Which of the following gate is a two-level logic gate ___
507	The only function of NOT gate is to ___
508	The number 10000 would appear just immediately after ___
509	Excess-3 code is known as ___
510	Consider the representation of six-bit numbers by two’s complement, one’s complement, or ___
511	Digital computers are more widely used as compared to analog computers, because they are ___
512	The inputs of a NAND gate are connected together ___
513	Which is the correct order of sequence for representing the input values in K-map?
514	NAND. gates are preferred over others because these ___
515	A NAND gate is called a universal logic element because ___
516	The binary code of (21.125)10 is ___
517	A hexadecimal odometer displays ___
518	In Boolean algebra, the bar sign (-) indicates ___
519	Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a ___
520	The NAND gate is AND gate followed by ___
521	The NOR gate is OR gate followed by ___
522	Which type of CPLD packaging can provide maximum number of pins on the ___
523	An AND gate will function as OR if ___
524	Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that ___
525	The binary number 10101 is equivalent to decimal number ___
526	What is/are the configurable functions of each and every IOBs connected around the ___
527	Most of the digital computers do not have floating point hardware because ___
528	The inverter is ___
529	A debouncing circuit is ___
530	“What would happen, if smaller logic modules are utilized for ___
531	Pick out the CORRECT statement:
532	Digital circuit can be made by the repeated use of ___
533	Positive logic in a logic circuit is one in which ___
534	Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?
535	The number of Boolean functions that can be generated by n variables is equal to ___
536	In case of OR gate, no matter what the number of inputs, a ___
537	In which of the following base systems is 123 not a valid number?
538	An OR gate has 6 inputs ___
539	The universal gate is ___
540	The fan put of a 7400 NAND gate is ___
541	About the Digital Electronics MCQ category