☑ MCQ PRACTICE

Computer Organization and Architecture Unit 1

Practice objective questions for quick revision and examination preparation. Try answering each question before revealing the answer.

📚 Computer Organization and Architecture
📖 Unit 1
🎯 MCQs

Computer Organization and Architecture - Unit-1

1
SC is incremented with every positive clock transition, unless its ____________________ is active.
ACLK input
BCLR input
CINC input
DEnable input
Correct Answer CLR input
2
1010 and 1100 (logic operands) — using these digits, find the Selective Complement.
A1000 (NOR Micro Operation)
B0110 (Ex-OR Micro Operation)
C0111 (OR Micro Operation)
D1110 (NAND Micro Operation)
Correct Answer 0110 (Ex-OR Micro Operation)
3
A computer system is sometimes subdivided into _______________________ and ______________________.
AHardware and Software
BHardware and Microware
CSoftware and Registers
DNone of the above
Correct Answer Hardware and Software
4
Register instructions & Input-output instructions have an operation code recognized by the control when D7 = __________ and I = ___________.
A110, 0/1
B101, 0/1
C111, 0/1
D000, 0/1
Correct Answer 111, 0/1
5
One way of constructing a common bus system is with ______________.
ATri State Buffer
BMultiplexer
CBoth a & b
DNone of the above
Correct Answer Both a & b
6
Symbolic representation of Subtraction operation:
AR3 <- R1-R2
BR3 <- R1,R2
CR3 <- R1*R2
DR3 <- R1
Correct Answer R3 <- R1-R2
7
P: R1 <-- R1 + R2 — in this statement, P: is a ______________.
ASymbol
BNotation
CControl Signal
DControl Point
Correct Answer Control Signal
8
RTL stands for:
ARandom transfer language
BRegister transfer language
CArithmetic transfer language
DAll of these
Correct Answer Register transfer language
9
Which operations are used for addition, subtraction, increment, decrement and complement function:
ABus
BMemory transfer
CArithmetic operation
DAll of these
Correct Answer All of these
10
Which language is termed as the symbolic depiction used for indicating the series:
ARandom transfer language
BRegister transfer language
CArithmetic transfer language
DAll of these
Correct Answer Register transfer language
11
In which transfer are the computer registers indicated in capital letters for depicting its function:
AMemory transfer
BRegister transfer
CBus transfer
DNone of these
Correct Answer Register transfer
12
The register that includes the address of the memory unit is termed as the ____:
AMAR
BPC
CIR
DNone of these
Correct Answer MAR
13
The register for the program counter is signified as _____:
AMAR
BPC
CIR
DNone of these
Correct Answer PC
14
In register transfer, the instruction register is denoted as:
AMAR
BPC
CIR
DNone of these
Correct Answer IR
15
How many types of micro operations are there?
A2
B4
C6
D8
Correct Answer 4
16
Which are the operations that a computer performs on data put in registers:
ARegister transfer
BArithmetic
CLogical
DAll of these
Correct Answer All of these
17
Which micro operations carry information from one register to another:
ARegister transfer
BArithmetic
CLogical
DAll of these
Correct Answer Register transfer
18
Micro operation is shown as:
AR1->R2
BR1<-R2
CBoth
DNone
Correct Answer R1<-R2
19
In memory read, the operation puts the memory address on to a register known as:
APC
BALU
CMAR
DAll of these
Correct Answer MAR
20
Which operation puts the memory address in the memory address register and data in DR:
AMemory read
BMemory write
CBoth
DNone
Correct Answer Memory write
21
Arithmetic operations are carried out by such micro operations on stored numeric data available in _____:
ARegister
BData
CBoth
DNone
Correct Answer Register
22
In arithmetic operations, the number of registers and the circuits for addition are at _____:
AALU
BMAR
CBoth
DNone
Correct Answer ALU
23
In a micro operation, every bit of a register is a:
AConstant
BVariable
CBoth
DNone
Correct Answer Variable
24
Which operation is extremely useful in serial transfer of data:
ALogical micro operation
BArithmetic micro operation
CShift micro operation
DNone of these
Correct Answer Shift micro operation
25
Which language specifies a digital system which uses specified notation:
ARegister transfer
BArithmetic
CLogical
DAll of these
Correct Answer Register transfer
26
HDL stands for:
AHuman description language
BHardware description language
CHardware description land
DNone of these
Correct Answer Hardware description language
27
High level language C supports register transfer technique for ______ application:
AExecuting
BCompiling
CBoth
DNone
Correct Answer Executing
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