What is data register in microprocessor?

Registers are temporary storage locations inside the CPU that hold data and addresses. The register file is the component that contains all the general purpose registers of the microprocessor. A few CPUs also place special registers such as the PC and the status register in the register file.

What is data register in operating system?

Data registers hold values that are treated as data by the device, such as the data read or written by a disk. From: Computers as Components (Third Edition), 2012.

What is stored in the data registers?

A register may hold an instruction, a storage address, or any kind of data (such as a bit sequence or individual characters). The effective address of any entity in a computer includes the base, index, and relative addresses, all of which are stored in the index register.

What are the 16-bit registers of 8085?

In 8085 microprocessor, the 16-bit registers used are:

• Stack pointer and accumulator.
• Program counter and accumulator.
• Stack pointer and program counter.
• Accumulator, stack pointer and program counter.

What is data register in assembly language?

The registers store data elements for processing without having to access the memory. A limited number of registers are built into the processor chip.

How is stored in a register in 8085 microprocessor?

The 8085 has six general-purpose registers to store 8-bit data; these are identified as- B, C, D, E, H, and L. These can be combined as register pairs – BC, DE, and HL, to perform some 16-bit operation. These registers are used to store or copy temporary data, by using instructions, during the execution of the program.

What is register explain various types of register?

A register is a temporary storage area built into a CPU. Most modern CPU architectures include both types of registers. Internal registers include the instruction register (IR), memory buffer register (MBR), memory data register (MDR), and memory address register (MAR).

What are registers in microcontroller?

A register is just a location in memory that you can write data to or read data from. Some of us refer to registers as “locations”. Special Function Registers. The special function registers (or simply SFR’s) on a microcontroller are just like the registers in data RAM.

What is the purpose of the data register and address register?

For example, a data register may store individual values referenced being by a currently running program. An address register contains memory addresses, which reference different blocks of memory within the system RAM.

What is 16bit register?

In computer architecture, 16-bit integers, memory addresses, or other data units are those that are 16 bits (2 octets or 2 Bytes) wide. Also, 16-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. So as a result, 16-bit register can store 216 different values.

What are types of registers?

Different Classes of CPU Registers

• Accumulator: This is the most frequently used register used to store data taken from memory.
• Memory Address Registers (MAR):
• Memory Data Registers (MDR):
• General Purpose Registers:
• Program Counter (PC):
• Instruction Register (IR):
• Condition code register ( CCR ) :

What is use of data in register Mcq?

a) MAR. b) PC. c) IR. d) R0. Explanation: MAR can interact with secondary storage in order to fetch data from it.

What is the flag register in 8085?

Flag register in 8085 microprocessor. The Flag register is a Special Purpose Register. Depending upon the value of result after any arithmetic and logical operation the flag bits become set (1) or reset (0). In 8085 microprocessor, flag register consists of 8 bits and only 5 of them are useful.

What are the general purpose registers in 8085 microprocessor?

The 8085 has six general-purpose registers to store 8-bit data; these are identified as- B, C, D, E, H, and L. These can be combined as register pairs – BC, DE, and HL, to perform some 16-bit operation.

What is the use of accumulator in 8085 microcontroller?

(a) Register A (Accumulator) – 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.

How to add 16 bit additional instruction in 8085 microprocessor?

Exceptional point in 8085 microprocessor 16 bit additional can only be possible by using an instruction DAD. stack pointer & program counter are two special function register these are those register which are used only by microprocessor not by user.