What is accumulator in microprocessor?

Accumulator. 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 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 is accumulator-based architecture?

An accumulator-based CPU architecture is a register-based CPU architecture that only has one general purpose register (the accumulator).

What is an accumulator in COA?

An accumulator is a register for short-term, intermediate storage of arithmetic and logic data in a computer’s CPU (central processing unit).

What is the internal architecture of an 8086 microprocessor?

8086 is a 16-bit microprocessor and address bus of 20-bit size. In this tutorial, we will see internal architecture of 8086 microprocessor. Firstly, we will discuss bus interface unit part and secondly, we will discuss execution unit part along with details of general purpose and special function registers.

Are there any instructions to reset the accumulator in 8086?

Problem – Write 8086 instructions which are used to reset accumulator. Solution – There are 4 instructions in 8086 to reset the accumulator. These instructions are: Explanation – Register AX is used. MOV AX, 0000: copies 0000 to AX.

How many registers are there in an 8086 microprocessor?

The 8086 architecture consists of 4 general-purpose registers of 16 bits. such as AX, BX, CX, and DX. You can access any register depending upon the size of your data. All registers have dedicated functions. The accumulator register (AX), Base Register (BX), Counter Register (CX), and a data register (DX) are of 16 bits each.

Which is the maximum mode architecture of 8086?

Maximum mode Architecture of 8086 microprocessor:  As shown in the below figure, the 8086 CPU is divided into two independent functional parts o Bus Interface Unit(BIU) o Execution Unit(EU)  Dividing the work between these two units speeds up processing. UNIT-1 INTRODUCTION TO 8086 ECE DEPARTMENT