The document comprises a series of multiple-choice questions related to CPUs and microprocessors, covering topics such as communication through buses, microprocessor generations, and architectural components. It includes questions about various functions and parts of the CPU, like the arithmetic logic unit, control unit, and memory usage. Additionally, some questions discuss performance metrics like clock speed and floating-point operations, aiming to assess knowledge of computer architecture.

1. CPU & Microprocessor Related Questions
1. ______is used by the CPU to communicate with devices that are contained within the computer,
through physical connections such as cable or printed circuits.
a) Bus b) Control Bus c) Program d) Stack pointer
Ans. b
2. Microprocessors as switching devices are for ______ generation.
Ans. Fourth
3. In a computer most processing takes place in_____
Ans. CPU
4. Large scale integration is used in _____ Processor.
Ans. Memory
5. The number of pins in 8085 microprocessor is _____
Ans. 40 pins
6. Memory location in INTEL 8085 microprocessor has ______ numbers.
Ans. 65536
7. The sign Flag sets in 8085 when ______.
Ans. 16 bits
8. The five Flip –Flop set in 8085 is called _____.
Ans. Flap
9. In 8085 there are _____ General purpose registers.
Ans. 6
10. The part of micro-processor which performs number crunching and logical comparisons is
called _______ .
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) Cache
(d) timer
Ans. a
11. ALU stands for ______.
(a) Arithmetic and Logic University
(b) Arithmetic and Local Unit
(c) Arithmetic and Logic Unit
(d) Analysis and Logic Unit
Ans. c
12. The part of micro-processor used for storing values needed for next cycle of processing is
called ______ .
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) clock
(d) timer
Ans. b

2. 13. The part of micro-processor holding data which is needed for forthcoming cycles of processing
is called ______ .
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) Cache
(d) timer
Ans. c
14. The part of micro-processor which maintains a clock and induces each cycle of processing
through a pulse is called ______.
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) Cache
(d) timer
Ans. d
15. The number of floating point operations carried out by a micro-processor in one second is
called ______.
(a) FLOPS (b) timer
(c) clock (d) frequency
Ans. a
16. The number of cycles of operations performed by a processor per second is called its _____.
(a) bus speed
(b) connection speed
(c) clock speed
(d) baud rate
Ans. c
17. Whereas clock speed is the gross number of operations performed by a processor per second,
FLOPS represents ________ of processor per second.
(a) wasted time
(b) effective out turn
(c) wasted cycles
(d) clock speed
Ans. b
18. A floating point operation may require ______ clock cycle to complete.
(a) just one
(b) less than one
(c) zero
(d) more than one
Ans. d
19. Intel Pentium processor was preceded byIntel processor.
(a) Core 2 duo (b) 80486/ 486
(c) Core i3 (d) Core i5
Ans. b
20.Which is an internal power supply units of CPU?
A CVT B UPS
C SMPS D Stablizer
Ans. c

3. 21. From the following which is known as the administrative section of the computer system?
a) Control Unit
b) Input Unit
c) RAM
d) Central Processing Unit
Ans. d
22. Component of CPU which is responsible for comparing the contents of two pieces of data is
a) ALU
b) CU
c) Memory
d) Register
Ans. a
23. When arithmetic, logic and control unit of a computer are combined into a single unit, it is
known as
a) Central processing unit
b) memory unit
c) I/O unit
d) Operating unit
Ans. a
24. Brain of a computer is called
a) CPU
b) Software
c) Herd disk
d) Memory
Ans. a
25. A CPU contains
a) A card reader & a printing device
b) An analytical engine & a control unit
c) A control unit & an arithmetic logic unit
d) None of these
Ans. c
26. Movement of signals between CPU & I/O is
a) ALU
b) Control unit
c) Memory unit
d) Secondary storage
Ans. b
27. The part of the CPU that access & decodes program instructions, & coordinates the flow of
data among various system components is the
a) Control unit b) ALU
c) Megahertz d) Motherboard
Ans. b
28. What does CPU stands for
a) Central processing unit b) Central process unit
c) Central printing unit d) Central peripheral unit
Ans. a

4. 29. CPU consists of following parts
a) CU and main memory
b) CU and ALU
c) Main memory and storage
d) Operating system and application
Ans. b
30. Input is modified into output by
a) peripherals
b) Memory
c) CPU
d) Storage
Ans. c
31. Part of CPU which coordinates all functions of computer & other components
a) Mother board
b) Coordination board
c) Control unit
d) ALU
Ans. c
32. The function of CPU is
a) To provide external storage of text
b) To communicate with the operator
c) Ro read, interpret & process the information & instructions
d) Assembler
Ans. c
33. This components is required to process data into information & consist of integrated circuits
a) CPU
b) Hard disk
c) RAM
d) ROM
Ans. a
34. Memory unit is one part of
a) Control unit b) CPU
c) Input device d) Output device
Ans. b
35. _____ is the common name of IC
Ans. Chip
36. CPU speed of a personal computer is
a) 32 KIPS b) 100 KIPS c) 1 MIPS d) None of these
Ans. b
36. A CPU contains
a) A card reader and a printing device b) an analytical engine and a control unit
c) a control unit and an arithmetic logic unit d) an arithmetic logic unit and a card reader
Ans. c

5. 37. C in CPU denotes
a) Central
b) Common
c) Convenient
d) Computer
Ans. a
38. CPU consists of
a) Input, output and processing
b) Control unit, primary storage & secondary storage
c) Control unit, arithmetic-logic unit, primary storage
d) None of these
Ans. c
39. What is control unit function in cpu
a) To transfer data to primary storage
b) To store program instructions
c) To perform logic functions
d) To decode program instructions
Ans. c
40. Which memory is used in CPU
a) RAM
b) ROM
c) Registers
d) Hard disk
Ans. c
1. A device, which is not connected to CPU is called as ________ device.
a) Offline b) Online
c) off device d) not working
2. The technology that stores only the essential instructions on a microprocessor chip and thus
enhances its speed is referred to as______
a) RISC b) ALU
c) Logo d) Command
3. Which part of the computer is directly involved in executing the instructions of the computer
program?
a) Processor b) RAM c) ROM d) Hard disk
4. The amount of time taken to complete a process is called _____
a) Turnaround Time b) Processing Time c) Process Time d) Working Time
5. CPU reads secondary memory from _____ memory.
a) Main
b) ROM
c) Hard Disk
d) Cache

6. 6. CPU is expanded as _______.
(a) Central Power Unit
(b) Critical Processing Unit
(c) Central Processing Unit
(d) Cerebral Processing Unit
7. ______ is called the "Brain of Computer".
(a) CPU (b) monitor
(c) keyboard (d) mouse
8. The main components housed in CPU are ______ .
(a) micro-processor
(b) Mother board, Random Access Memory (RAM)
(c) Secondary storage devices (hard disk,CD/DVD drive, floppy disk drive, etc.)
(d) all of them
9. In the CPU of a computer, _______ delivers power supply to all the components at appropriate
voltages.
(a) Hard Disk
(b) Mother Board
(c) Switch Mode Power Supply (SMPS)
(d) DVD drive
10. The chip carrying out all processing works in a computer is called _______.
(a) micro-processor (b) keyboard (c) BIOS chip (d) RAM
11. ______ produces output/results after processing the input data.
(a) input unit (b) Central Processing Unit (CPU)
(c) output unit (d) all of them
12. If CPU executes multiple programs simultaneously, it will be known as ?
a) Multiprocessing b) Multitasking
c) Timesharing d) Multiprogramming
13. Parts of CPU are
a) ALU, CU, MU b) ALU, peripherals, memory
c) RAM, ROM, CU d) ALU, RAM
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