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WorksheetsCOA Unit-1
Total questions: 20
Worksheet time: 20mins
1. RTL stands for:
Random transfer language
Register transfer language
Arithmetic transfer language
All of these
1. Which operations are used for addition, subtraction, increment, decrement and complement function:
Bus
Memory transfer
Arithmetic operation
All of these
In which transfer the computer register are indicated in capital letters for depicting its function:
Memory transfer
Register Transfer
Bus transfer
None of these
Which operation is binary type, and are performed on bits string that is placed in register:
Logical micro operation
Arithmetic micro operation
Both
None
In every transfer, selection of register by bus is decided by:
Control signal
No signal
All signal
All of above
is a command given to a computer to perform a specified operation on some given data:
An instruction
Command
Code
None of these
Abbreviation ASCII stands for
American standard code for information interchange
Abbreviation standard code for information interchange
Both
None of these
what is the BCD for a decimal number 559:
[010101011001]
[0101 0001 1010]
[0101 1001 1001]
[1001 1010 0101]
The difference between half adder and full adder is
Half adder has two inputs while full adder has three outputs
Half adder has two inputs while full adder has two inputs
Half adder has two inputs while full adder has two outputs
Half adder has three inputs while full adder has three outputs
In which operation carry is obtained?
Addition
Multiplication
Both addition and substraction
Multiplication
If A and B are the inputs of a half adder, the carry is given by
A EXOR B
A AND B
A OR B
A XOR B
How many ANd,OR,EXOR gates are required for the configuration of full adder
4,0,1
2,1,2
3,1,2
1,1,2
If A, B and C are the inputs of a full adder then the sum is given by
A AND B AND C
A OR B AND C
A XOR B XOR C
A OR B OR C
In parts of the processor, adders are used to calculate
Table Indices
Increment and Decrement Operators
Addresses
All of the Above
The Opeartion executed on data stored in registers is called
Macro-operation
Micro-Operation
Bit-Operaton
Byte-Operation
The main virtue for using single Bus structure is
Fast data transfers
Cost effective connectivity and speed
Cost effective connectivity and ease of attaching peripheral devices
None of the mentioned
What is a multiplexer?
It is a type of decoder which decodes several inputs and gives one output
A multiplexer is a device which converts many signals into one
It takes one input and results into many output
It is a type of encoder which decodes several inputs and gives one output
In a multiplexer, the selection of a particular input line is controlled by ___________
Data controller
Selected lines
Logic gates
Both data controller and selected lines
If the number of n selected input lines is equal to 2^m then it requires _____ select lines.
2
m
n
2n
How many select lines would be required for an 8-line-to-1-line multiplexer?
2
4
8
3
