Question

True/False:

a) Digital circuits can be implemented solely with NAND or NOR gates.

b) The registers are on the chip, but not on the CPU.

c) Use of Memory Buffer Register is like a permanent storage.

d) In twos complement, to subtract one number from another, take the negation of the subtrahend and add it to the minuend.

e) The central processing unit (CPU) includes the arithmetic and logic unit (ALU), registers, a control unit, and an internal bus for moving data within the CPU.

Answer 1

a. TRUE

NAND and NOR gates are also known as universal gates as they can be used to generate all types of gates. Thus digital circuits can be implemented solely using NAND or NOR gates.

b. FALSE

The CPU contains some special purpose registers, The CPU cannot directly use data in RAM so the data is copied to the registers inside the CPU for computation.

c. FALSE

The memory buffer register acts as a buffer storage that is it only holds the value until the data is moved from one location to another. It can not store the data permanently.

d. FALSE

In two's complement subtraction of one number from another, the two's complement of the subtrahend is calculated, and then it is added to the minuend.

e. TRUE

The CPU includes all these components and the internal bus is used to transport data to and from the ALU.