# Digital Arithmetic Operations and Circuits - General Questions Online Exam Quiz

Digital Arithmetic Operations and Circuits - General Questions GK Quiz. Question and Answers related to Digital Arithmetic Operations and Circuits - General Questions. MCQ (Multiple Choice Questions with answers about Digital Arithmetic Operations and Circuits - General Questions

### For a 4-bit parallel adder, if the carry-in is connected to a logical HIGH, the result is:

Options

A : the same as if the carry-in is tied LOW since the least significant carry-in is ignored.

B : that carry-out will always be HIGH.

C : a one will be added to the final result.

D : the carry-out is ignored.

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### What is the first thing you will need if you are going to use a macrofunction?

Options

A : A complicated design project

B : An experienced design engineer

C : Good documentation

D : Experience in HDL

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### Perform subtraction on each of the following binary numbers by taking the two's-complement of the number being subtracted and then adding it to the first number. 01001        01100 00011        00111

Options

A : 01100    10011

B : 00110    00101

C : 10110    10101

D : 00111    00100

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Options

A : 1110 1101

B : 1111 1001

C : 1111 0011

D : 1110 1001

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### Multiply the following binary numbers. 1010 1011 1001 ×0011 ×0111 ×1010

Options

A : 0001  1110    0100  1101    0101  1011

B : 0001  1110    0100  1100    0101  1010

C : 0001  1110    0100  1101    0101  1010

D : 0001  1101    0100  1101    0101  1010

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### Add the following BCD numbers. 0110 0111 1001 0101 1000 1000

Options

A : 0000  1011    0000  1111    0001  0001

B : 0001  0001    0001  0101    0001  0001

C : 0000  1011    0000  1111    0001  0111

D : 0001  0001    0001  0101    0001  0111

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### Add the following hexadecimal numbers. 3C 14 3B +25 +28 +DC

Options

A : 60    3C    116

B : 62    3C    118

C : 61    3C    117

D : 61    3D    117

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Options

A : 00010000 BCD

B : 00010111 BCD

C : 00001011 BCD

D : 00010011 BCD

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### What are constants in VHDL code?

Options

A : Fixed numbers represented by a name

B : Fixed variables used in functions

C : Fixed number types

D : Constants do not exist in VHDL code.

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### The 2's-complement system is to be used to add the signed binary numbers 11110010 and 11110011. Determine, in decimal, the sign and value of each number and their sum.

Options

A : –113 and –114, –227

B : –14 and –13, –27

C : –11 and –16, –27

D : –27 and –13, –40

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