Home / Online Test / 4-Bit Parallel Adder/Subtractor Objective Questions – Part 1 Online Test 4-Bit Parallel Adder/Subtractor Objective Questions – Part 1 S Bharadwaj ReddyLeave a comment 4-Bit Parallel Adder/Subtractor Objective Questions Digital Electronics Objective Questions 0% The selector inputs to an arithmetic/logic unit (ALU) determine the: Data word selection Arithmetic or logic function Selection of the IC Clock frequency to be used Correct! Wrong! - Continue >> Controlled inverter is also known as NOT gate Controlled buffer None of the Mentioned Both controlled buffer and NOT gate Correct! Wrong! - Continue >> Which of the following is correct for full adders? Full adders have the capability of directly adding decimal numbers In a parallel full adder, the first stage may be a half adder Full adders are limited to two inputs since there are only two binary digits Full adders are used to make half adders Correct! Wrong! - Continue >> The binary subtraction of 0 – 0 = ? Difference = 1, borrow = 1 Difference = 0, borrow = 0 Difference = 1, borrow = 0 Difference = 0, borrow = 1 Correct! Wrong! - Continue >> What is the major difference between half-adders and full-adders? Full adders have a carry input capability Half adders can handle only single-digit numbers Full-adders are made up of two half-adders Full adders can handle double-digit numbers Correct! Wrong! - Continue >> When performing subtraction by addition in the 2’s-complement system: The minuend and subtrahend are both left in their original form The minuend and the subtrahend are both changed to the 2’s-complement The minuend is left in its original form and the subtrahend is changed to its 2’s-complement The minuend is changed to 2’s-complement and the subtrahend is left in its original form Correct! Wrong! - Continue >> Why XOR gate is called an inverter? It behaves like a NOT gate Because of the same input None of the Mentioned Because of the same output Correct! Wrong! - Continue >> How many basic binary subtraction operations are possible? 4 2 1 3 Correct! Wrong! - Continue >> Controlled buffers can be useful In comparison of component’s output with its input To control the circuit’s output into the bus All of the Mentioned In increasing the output from its low input Correct! Wrong! - Continue >> A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is NAND gate Ex-NOR gate OR gate Ex-OR gate Correct! Wrong! - Continue >> What are the two types of basic adder circuits? Half-adder and full-adder One and two’s-complement Sum and carry Asynchronous and synchronous Correct! Wrong! - Continue >> What is the first thing you will need if you are going to use a macro-function? Experience in HDL A complicated design project Good documentation An experienced design engineer Correct! Wrong! - Continue >> Share the quiz to show your results ! Facebook Facebook Just tell us who you are to view your results ! Show my results >> 4-Bit Parallel Adder/Subtractor – 1 I got %%score%% of %%total%% right Share your results Facebook Facebook Twitter Google+ ↺ PLAY AGAIN !
