What is meant by accumulator in microprocessor?

What is meant by 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. The accumulator is also identified as register A.

What do you mean by accumulator based architecture?

An accumulator machine, also called a 1-operand machine, or a CPU with accumulator-based architecture, is a kind of CPU where, although it may have several registers, the CPU mostly stores the results of calculations in one special register, typically called “the accumulator”.

What is the purpose of the accumulator?

Accumulator is a pressure vessel for storing hydraulic pressure in it utilizing compressible and decompressible nature of nitrogen gas. So, it can be said that the accumulator has a similar function to the rechargeable electrical battery. In electricity, electrical energy is stored to the battery.

Why is AX register called accumulator?

AX is the primary accumulator; it is used in input/output and most arithmetic instructions. For example, in multiplication operation, one operand is stored in EAX or AX or AL register according to the size of the operand. BX is known as the base register, as it could be used in indexed addressing.

What is accumulator explain with short example?

An accumulator is a type of register included in a CPU. It acts as a temporary storage location which holds an intermediate value in mathematical and logical calculations. For example, in the operation “3 + 4 + 5,” the accumulator would hold the value 3, then the value 7, then the value 12.

Is accumulator a general purpose register in 8085?

The accumulator is an 8-bit register (can store 8-bit data) that is the part of the arithmetic and logical unit (ALU). Accumulator is also defined as register A. Flag registers: The flag register is a special purpose register and it is completely different from other registers in microprocessor.

What is accumulator Geeksforgeeks?

Accumulator: The accumulator is an 8-bit register (can store 8-bit data) that is the part of the arithmetic and logical unit (ALU). After performing arithmetical or logical operations, the result is stored in accumulator. Accumulator is also defined as register A.

What is general purpose register based microprocessor?

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.

What is accumulator in engineering?

A hydraulic accumulator is a pressure storage reservoir in which an incompressible hydraulic fluid is held under pressure that is applied by an external source of mechanical energy. The external source can be an engine, a spring, a raised weight, or a compressed gas. It is a type of energy storage device.

What is accumulator and how it works?

The accumulators use nitrogen to keep the hydraulic fluid pressurized. When the fluid is pumped into an accumulator the nitrogen (N2) inside the accumulator is compressed. The pressure of the nitrogen in the low pressure reservoir will vary from 60 psi when empty to 200 psi when full. …

What is the difference between the accumulator and register?

It’s is used to store information which is immediately needed by the processor. Processors are very fast & only register memory can match their speeds. Therefore all the information to & from the processor goes via registers. Accumulator is a register which stores the intermediate results for large computations.

What is accumulator in spark?

Accumulators are variables that are only “added” to through an associative operation and can therefore, be efficiently supported in parallel. They can be used to implement counters (as in MapReduce) or sums. Spark natively supports accumulators of numeric types, and programmers can add support for new types.

What is the use of register a in 8085 microprocessor?

Register A is an 8-bit register used in 8085 to perform arithmetic, logical, I/O & LOAD/STORE operations. Register A is quite often called as an Accumulator.

What is the accessible memory capacity of 8086 microprocessor?

The address bus is 20-bit long; therefore the accessible memory capacity of 8086 microprocessor is 220 Bytes or 1MB. it is available in various versions with a clock frequency of 5 MHz, 8 MHz and 10 MHz. It has a 16-bit ALU capable of performing all the operations of 8085’s ALU and also the operation of Multiplication and Division.

When was the 8085 microcontroller invented?

Once designed into such products as the DECtape II controller and the VT102 video terminal in the late 1970s, the 8085 served for new production throughout the lifetime of those products. This was typically longer than the product life of desktop computers. The 8085 is a conventional von Neumann design based on the Intel 8080.

What is the address latch of 8085 microprocessor?

However, an 8085 circuit requires an 8-bit address latch, so Intel manufactured several support chips with an address latch built in. These include the 8755, with an address latch, 2 KB of EPROM and 16 I/O pins, and the 8155 with 256 bytes of RAM, 22 I/O pins and a 14-bit programmable timer/counter.