Computer Organization MCQs
1. The front panel display provides
lights as green LED represent _________ and red LED represent _________ for
device programmer who writes input/output basic:
a.
Busy and Error
b. Error and Busy
c. Busy and Busy
d. Error and Error
2. The input data for processing uses the
standard input device which by default is a _________ :
a. Mouse
b. Scanner
c.
Keyboard
d. Monitor
3. The processed data is sent for output
to standard _________ device which by default is computer screen:
a. Input
b.
Output
c. Both a & b
d. None of these
4. Each instruction is executed by set of
micro operations termed as:
a.
Micro instructions
b. Mini instructions
c. Both a & b
d. None of these
5. For each micro operation the control
unit generates set of __________ signals:
a.
Control
b. Address
c. Data
d. None of these
6. Sequence of microinstructions is
termed as micro program or __________ :
a. Hardware
b. Software
c.
Firmware
d. None of these
7. The micro program is an _________
written in microcode and stored in firmware which is also referred as
___________ :
a.
Interpreter and control memory
b. Translator and control store
c. Translator and control memory
d. Interpreter and Translator
8. Compared to hardware, firmware is
___________ to design micro programmed organization:
a. Difficult
b.
Easier
c. Both a& b
d. None of these
9. Compared to software, firmware is
_________ to write:
a. Easier
b.
Difficult
c. Mediator
d. Optimum
10. __________ program converts machine
instructions into control signals:
a. Control memory program
b. Control store program
c.
Both a & b
d. Only memory
11. who coined the term micro program in
1951:
a. T.V. Wilkes
b.
M.V. Wilkes
c. S.V. Wilkes
d. D.V. Wilkes
12. what is full form of EDSAC:
a. Electronic delay source accumulator calculator
b. Electronic delay storage automatic code
c. Electronic destination source automatic calculator
d.
Electronic delay storage automatic calculator
13. Who led to development of read –only
magnetic core matrix for use in control unit
of small computer at IBM’s laboratory:
a.
John Fairclough’s
b. Johny fairclough
c. Mr. Redcliff
d. M.V. Wilkes
14. From1961-1964 John fairclough’s
research played an important role to pursue full range of compatible computers
as system:
a.
System/360
b. System/460
c. System/560
d. System/780
15. Each microinstructions cycle
is made of 2 parts:
a. Fetch
b. Execute
c. Code
d.
Both a & b
16. One of use of microprogramming to
implement __________ of processor in Intel 80x86 and Motorola 680x0 processors
whose instruction set are evolved from 360 original:
a. Control structure
b. Without control
c.
Control unit
d. Only control
17. The function of these
microinstructions is to issue the micro orders to __________ :
a.
CPU
b. Memory
c. Register
d. Accumulator
18. Micro-orders generate the __________
address of operand and execute instruction and prepare for fetching next
instruction from the main memory:
a. Physical
b.
Effective
c. Logical
d. all of above
19. Which of the following 2 task are
performed to execute an instruction by MCU:
a. Microinstruction execution
b. Microinstruction sequencing
c.
Both a & b
d. None of these
20. What is the purpose of
microinstruction executions:
a. Generate a control signal
b. Generate a control signal to compile
c.
Generate a control signal to execute
d. All of these
21. Which microinstruction provide next instruction
from control memory:
a. Microinstruction execution
b. Microinstruction Buffer
c. Microinstruction decoder
d.
Microinstruction Sequencing
22. Which are the following components of
microprogramed units to implement control process:
a. Instruction register
b. Microinstruction address generation
c. Control store microprogram memory
d. Microinstruction Buffer
e. Microinstruction decoder
f.
All of these
23. Microcodes are stored as firmware in
__________ :
a. Memory chips
b. Registers
c. accumulators
d. none of these
24. A control memory is __________ stored
in some area of memory:
a.
Control instruction
b.
Memory instruction
c.
Register instruction
d.
None of these
25. A computer having writable control
memory is known as __________ :
a. Static micro programmable
b.
Dynamic micro programmable
c. Both a & b
d. None of these
26. The control memory contains a set of
words where each word is:
a. Microinstruction
b. Program
c. Sets
d. All of these
27. During program execution content of
main memory undergo changes and, but control memory has __________
microprogram:
a. Static
b. Dynamic
c. Compile time
d. Fixed
28. What happens if computer is started :
a. It executes “CPU” microprogram which is sequence of microinstructions
stored in ROM
b. It executes “code” microprogram which is sequence of
microinstructions stored in ROM
c.
It executes “boot” microprogram which is sequence of microinstructions stored
in ROM
d. It executes “strap loader” microprogram which is sequence of
microinstructions stored in ROM
29. Control memory
is part of __________ that has addressable storage registers and used as
temporary storage for data:
a. ROM
b. RAM
c. CPU
d. Memory
30. How many modes the address in control
memory are divided:
a. 2
b. 3
c. 5
d. 7
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