How many general purpose registers are there in 8086?
4 general purpose registers
What are the general purpose registers of 8086?
The registers inside the 8086 are all 16 bits. They are split up into four categories: General Purpose, Index, Status & Control, and Segment. The four general purpose registers are the AX, BX, CX, and DX registers.
Which is the only general purpose register whose contents can be used for addressing in 8086?
DX is data register. The two parts are DH and DL. This register can be used in Multiplication, Input/output addressing etc. This is the stack pointer.
What is the purpose of 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 is the main difference between register and memory?
Difference between Register and Memory :
| S.NO. | Register | Memory |
|---|---|---|
| 5. | Registers can be control i.e. you can store and retrieve information from them. | Memory is almost not controllable. |
| 6. | Registers are faster than memory. | RAM is much slower than registers. |
Why registers are faster than memory?
The compiler decides what variables should be in registers and when. Registers are essentially internal CPU memory. So accesses to registers are easier and quicker than any other kind of memory accesses.
Is register a main memory?
The difference between register and main memory is that a register is a small and fast storage inside the CPU that holds data temporarily while the main memory is a storage component in the computer that stores data and programs currently used by the CPU.
Which is faster cache or register?
In a computer, a register is the fastest memory. Cache memory is extremely fast memory that is built into a computer’s central processing unit (CPU). The data that is stored within a cache might be values that have been computed earlier or duplicates of original values that are stored elsewhere.