Functional Units of a Computer Questions and Answers

Computer Organization Questions and Answers – Functional Units of a Computer

This set of Computer Organization Assessment Questions and Answers focuses on “Functional Units of a Computer”.

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

Explanation: The ALU is the CPU’s computational heart. It is capable of carrying out all mathematical and logical processes. It uses some internal memory areas to keep immediate results in order to perform better.

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

Explanation: This unit is in charge of controlling and coordinating the CPU’s many parts and components.

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

Explanation: None.

4. 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

Explanation: The data received by the input devices is stored in buffers, and when the buffer is full, the data is sent to the CPU.

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

Explanation: BUS is a set of wires that transport data, address, and control signals. It is used to link the computer’s numerous components.

 

6. 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) Address decoder, registers and Control circuits
d) Only Control circuits

Explanation: The I/O devices are connected to the CPU via BUS and to interact with the BUS they have an interface.

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

Explanation: The time required to access a part of the memory for data retrieval.

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

Explanation: Virtual memory is like an extension to the existing memory.

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

Explanation: This is a system command enabled when a memory function is completed by a process.

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

Explanation: The time is taken to finish one task and to start another.

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

Explanation: For convenience of use, data used by computers must be stored and represented in a specific manner.

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

Explanation: Data that is to be stored in computers must be encoded in a specific method in order for the data to be processed securely.

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

Explanation: The program written and before being compiled or assembled is called as a source program.

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

Explanation: Memory devices are usually made of semiconductors for faster manipulation of the contents.

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

Explanation: These compact, quick memory devices are compared to RAM because they improve system performance by only storing files that are required by the present process.

In its most basic form, a computer consists of five functional units: an input unit, an output unit, a memory unit, an arithmetic and logic unit, and a control unit. These compact, quick memory devices are compared to RAM because they improve system performance by only storing files that are required by the present process. A functional unit is a component of a computer processor that conducts the operations and calculations that the computer programme requires. A computer system’s functional units are components of the CPU (Central Processing Unit), which perform the actions and calculations required by the computer software.

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