Match List - I with List - II. Choose the correct answer from the options given below :List - I (computing systems) List - II (working/output) (A) Half Adder (I) Has n input and 2n output (B) Decoder (II) CPU Storage Unit (C) Register (III) Used to store program at runtime (D) Main memory (IV) 2-bit addition circuit
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
Each item in List - I is a basic hardware building block of a computer, and List - II describes what that block does or produces.
(A) Half Adder — a combinational circuit that adds two single bits and produces a sum bit and a carry bit, so it is the 2-bit addition circuit: (A)-(IV).
(B) Decoder — a decoder with n input lines activates exactly one of its \(2^n\) output lines, so it has n input and 2n output: (B)-(I).
(C) Register — a small, fast group of flip-flops inside the processor that holds operands and results, i.e. the CPU storage unit: (C)-(II).
(D) Main memory — the RAM where a program and its data are loaded while the program runs: (D)-(III).
Any code that pairs the half adder with the CPU storage unit, or the decoder with the store for running programs, contradicts these definitions, so the codes beginning (A)-(II) and the code giving (B)-(II) are ruled out.
(A)-(IV), (B)-(I), (C)-(II), (D)-(III) option is correct.
Important Questions from Combinational Circuits
Which of the following represents the borrow in a half subtraction?
Carry input is present in which of the following?
The number of control lines for 8-to-1 multiplexer is:
X/Y (where X represents the input code and Y represents the output code) as a qualifying symbol does NOT relate to:
Consider 4-bit gray code representation of numbers. Let h3 h2 h1 h0 be the gray code representation of a number n and g1g2g3g0 be the gray code representation of the number (n + 1) modulo 16. Which one of the following functions is correct?
