Basic Operational Concepts & Functional Units

September 5, 2017
Mubashir

1. The decoded instruction is stored in ______ .
a) IR
b) PC
c) Registers
d) MDR

2. The instruction -> Add LOCA,R0 does,
a) Adds the value of LOCA to R0 and stores in the temp register
b) Adds the value of R0 to the address of LOCA
c) Adds the values of both LOCA and R0 and stores it in R0
d) Adds the value of LOCA with a value in accumulator and stores it in R0

3. Which registers can interact with the secondary storage ?
a) MAR
b) PC
c) IR
d) R0

4. During the execution of a program which gets initialized first ?
a) MDR
b) IR
c) PC
d) MAR

5. Which of the register/s of the processor is/are connected to Memory Bus ?
a) PC
b) MAR
c) IR
d) Both a and b

6. ISP stands for,
a) Instruction Set Processor
b) Information Standard Processing
c) Interchange Standard Protocol
d) Interrupt Service Procedure

7. The internal Components of the processor are connected by _______ .
a) Processor intra-connectivity circuitry
b) Processor bus
c) Memory bus
d) Rambus

8. ______ is used to choose between incrementing the PC or performing ALU operations .
a) Conditional codes
b) Multiplexer
c) Control unit
d) None of these

9. The registers,ALU and the interconnection between them are collectively called as _____ .
a) Process route
b) Information trail
c) information path
d) data path

10. _______ is used to store data in registers .
a) D flip flop
b) JK flip flop
c) RS flip flop
d) none of these

11. The ______ format is usually used to store data .
a) BCD
b) Decimal
c) Hecadecimal
d) Octal

12. The 8-bit encoding format used to store data in a computer is ______ .
a) ASCII
b) EBCDIC
c) ANCI
d) USCII

13. A source program is usually in _______ .
a) Assembly language
b) Machine level language
c) High-level language
d) Natural language

14. Which memory device is generally made of semi-conductors ?
a) RAM
b) Hard-disk
c) Floppy disk
d) Cd disk

15. The small extremely fast, RAM’s are called as _______ .
a) Cache
b) Heaps
c) Accumulators
d) Stacks

16. The ALU makes use of _______ to store the intermediate results .
a) Accumulators
b) Registers
c) Heap
d) Stack

17. The control unit controls other units by generating ____ .
a) Control signals
b) Timing signals
c) Transfer signals
d) Command Signals

18. ______ are numbers and encoded characters, generally used as operands .
a) Input
b) Data
c) Information
d) Stored Values

19. The Input devices can send information to the processor,
a) When the SIN status flag is set
b) When the data arrives regardless of the SIN flag
c) Neither of the cases
d) Either of the cases

20. ______ bus structure is usually used to connect I/O devices .
a) Single bus
b) Multiple bus
c) Star bus
d) Rambus

21. The I/O interface required to connect the I/O device to the bus consists of ______ .
a) Address decoder and registers
b) Control circuits
c) Both a and b
d) Only b

22. To reduce the memory access time we generally make use of ______ .
a) Heaps
b) Higher capacity RAM’s
c) SDRAM’s
d) Cache’s

23. ______ is generally used to increase the apparent size of physical memory .
a) Secondary memory
b) Virtual memory
c) Hard-disk
d) Disks

24. MFC stands for,
a) Memory Format Caches.
b) Memory Function Complete.
c) Memory Find Command.
d) Mass Format Command.

25. The time delay between two successive initiation of memory operation _______ .
a) Memory access time
b) Memory search time
c) Memory cycle time
d) Instruction delay

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