Is Program Counter A Special Purpose Register?

Special Purpose Registers: PC (Program Counter) –

address of the instruction being executed

.

Which of the following is not considered as special purpose register?

5. Which of the following is not a special function register? Explanation:

Accumulator is a general function register

, which can be used for multiple functions. Explanation: SP is the short form of stack pointer which store address of stack top.

What are the special registers in CPU?

What is the purpose program counter?

The program counter

stores the address of each instruction and tells the CPU in what order they should be carried out

. When a program is being executed, the CPU performs the fetch-decode-execute cycle, which repeats over and over again until reaching the STOP instruction.

Which is a special purpose register?

A Special Function Register (or Special Purpose Register, or simply Special Register) is

a register within a microprocessor

, which controls or monitors various aspects of the microprocessor’s function.

What are the types of registers?

• MAR Register. The full form of MAR is the memory address register. …
• MDR. The full form of MDR register is a memory data register. …
• MBR. The full form of MBR is the memory buffer register. …
• PC. The full form of PC is the program counter register. …
• Accumulator. …
• Index Register. …
• Instruction Register.

Which register is a 16-bit special purpose register?

Stack Pointer (SP):

It is a 16-bit special purpose register which always stores the address of top of the Stack. i.e. it always points to top of the Stack. Stack is a part of the memory location used to store the data temporarily.

What is the purpose of IP register?

A special-purpose register, usually called the instruction pointer (IP) or program counter (PC),

keeps track of what instruction is being executed.

Which is general purpose register?

General purpose registers are

used to store temporary data within the microprocessor

. … It is of 16 bits and is divided into two 8-bit registers BH and BL to also perform 8-bit instructions. It is used to store the value of the offset. Example: MOV BL, [500] (BL = 500H) CX – This is the counter register.

What is general purpose and special-purpose register?

We have discussed general purpose registers as being

discrete memory locations within the CPU used to hold temporary data and instructions

. … A special purpose register is one that has a specific control or data handling task to carry out. There are a number of special purpose registers within the CPU.

What are the 4 registers in a CPU?

• program counter.
• memory address register (MAR)
• memory data register (MDR)
• current instruction register (CIR)
• accumulator (ACC)

How many registers does a CPU have?

The CPU has

8 general-

purpose registers, each capable of storing 32-digit binary numbers.In addition to 32-bit data, they can also store 16- or 8-bit data.

How do registers work?

Registers are temporary storage areas for instructions or data. … Registers work

under the direction of the control unit to accept, hold, and transfer instructions or data and perform arithmetic or logical comparisons at high speed

.

What is true program counter?

A program counter is

a register in a computer processor

that contains the address (location) of the instruction being executed at the current time. As each instruction gets fetched, the program counter increases its stored value by 1.

How do you calculate program counters?

A program counter is one of the register used in computer architecture and os. It holds the address of next instruction to be executed. After instruction is executed, it will incremented by one,(PC =PC +1) moreover program counter will be point to the next instruction.

Which instructions affects the program counter?

1. Call & Return.
2. Call & Jump.
3. Push & Pop.
4. Return & Jump.