Introduction to Computer Science

1) use two's compliment to revert this number from binary to decimal 1010 

• 2

• -6

• -2

• 10

2)Output of HalfAdder ....

• A) out

• B)Sum

• C)Sum and Carry

• D)Carry

3)what is the function of DFF

• A) Outputs the input in the previous time-step

• B) Change memory data and stores it to RAM

• C) Same function as S-R Flip Flop

4)Find an And gate circuit 

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5)Ram8 has 8 registers , so how many addresses we need?

• 4

• 3

• 32

• 2

How many control bits are there in ALU?

• 2

• 8

• 3

• 6

7) What is the difference between a bit and a byte?

• A)There are no difference between bit and byte , and they hold 0 and 1 only.

• B)A bit is a unit of information that can be either 0 or 1, while a byte is a unit of information that can be either 0 or 255.

• C)can be either 0 or 1. A byte is a collection of 8 bits, and can represent 256 different values.

• D)A bit is a unit of information that is used to represent text, while a byte is a unit of information that is used to represent images and sound.

8) What is a stack?

• A)A stack is a data structure that follows the First In First Out (FIFO) principle.

• B)A stack is a data structure that follows the Last In First Out (LIFO) principle

• C)A stack is a data structure that is used to store large amounts of data.

• D)A stack is a data structure that is used to store large amounts of data.

9)Find all components of FullAdder

• A)One HalfAdder and And gate

• B)three Mux and Or gate

• C)Two halfAdder and Or gate

• D)C)Two halfAdder and And gate

10)101001 increment this binary to 1

• A)101010

• B)110100

• C)111000

• D)101100