What is the function of accumulator in 8086 microprocessor?
The general purpose registers are used to store temporary data in the time of different operations in microprocessor. 8086 has eight general purpose registers. This is the accumulator. It is 16-bit registers, but it is divided into two 8-bit registers.
What are the functions of an accumulator in microprocessor?
The accumulator is an 8-bit register that is a part of arithmetic/logic unit (ALU). This register is used to store 8-bit data and to perform arithmetic and logical operations. The result of an operation is stored in the accumulator.
What is the function of BX register?
BX – base register, typically used to hold the address of a procedure or variable. CX – count register, typically used for looping. DX – data register, typically used for multiplication and division. All of the general purpose registers can be treated as a 16 bit quantity or as two 8 bit quantities.
What is the function of BX register in 8086?
BX – This is the base register. 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.
What are the functions of the four registers?
Four registers are essential to instruction execution:
- Program counter (PC): Contains the address of an instruction to be fetched.
- Instruction register (IR): Contains the instruction most recently fetched.
- Memory address registers (MAR): Contains the address of a location in memory.
What is the difference between main memory and registers?
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.
Is a register memory?
Register memory is the smallest and fastest memory in a computer. It is not a part of the main memory and is located in the CPU in the form of registers, which are the smallest data holding elements. A register temporarily holds frequently used data, instructions, and memory address that are to be used by CPU.
Is cache memory a register?
Register are the smallest holding data elements that are built into processor itself. These are memory locations that can be directly accessible by processor….Difference between Cache Memory and Register :
| S.No. | CACHE MEMORY | REGISTER |
|---|---|---|
| 2. | Cache memory is exactly a memory unit. | It is located on the CPU. |
What are the two types of cache memory?
Two types of caching are commonly used in personal computers: memory caching and disk caching. A memory cache (sometimes called a cache store, a memory buffer, or a RAM cache) is a portion of memory made up of high-speed static RAM (SRAM) instead of the slower and cheaper dynamic RAM (DRAM).
What is advantage of cache memory?
Advantages of Cache Memory It is faster than the main memory. The access time is quite less in comparison to the main memory. The speed of accessing data increases hence, the CPU works faster. Moreover, the performance of the CPU also becomes better.