Which of the following registers can be used as offset registers for data segment?
Explanation: The register SI is generally used to store the offset of source data in the data segment while the register DI is used to store the offset of destination in data or extra segment.
Which register contains offset address of the next instruction to be executed in code segment?
Instruction Pointer
Which of the following register of 8086 microprocessor holds the offset address of a location in the memory?
SI is a 16-bit register. This register is used to store the offset of source data in data segment. In other words the Source Index Register is used to point the memory locations in the data segment.
Which general purpose register can hold offset address of any memory?
BX Register (16-Bits): It holds the memory address (offset address), in Indirect Addressing modes.
Which is general purpose register?
General purpose registers are used to store temporary data within the microprocessor. There are 8 general purpose registers in 8086 microprocessor. Figure – General purpose registers. AX – This is the accumulator. It is of 16 bits and is divided into two 8-bit registers AH and AL to also perform 8-bit instructions.
What is the function of accumulator register?
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 is the function of data register?
memory data register (MDR) A register used for holding information (either program words or data words) that is in the process of being transferred from the memory to the central processor, or vice versa.
Is the ALU A register?
control unit (CU) arithmetic logic unit (ALU) registers.
Is accumulator a 16 bit register?
All microprocessors make use of an accumulator register that can supply one number for an action, and where the result of an action will also be stored. The size of the accumulator in terms of bits is used as a measure of the data unit capability of the microprocessor (as 8-bit, 16-bit, 32-bit, 64-bit, and so on).
Is buffer a register?
Buffer is a temporary storage area, usually a block in memory, in which items are placed while waiting to be transferred from an input device or to an output device….Difference Between Register and Buffer :
| S.No. | Register | Buffer |
|---|---|---|
| 5. | It is used to store data temporarily for processing and transfer. | It is used to store data temporarily before using them. |
Which flip flop is used in buffer register?
These can be constructed using a series of flip-flops as each flip-flop can store a single bit. This means that in order to store an n-bit binary word one should design an array of n flip-flops. Figure 1 shows a 4 bit synchronous buffer register formed by cascading four positive edge triggered D flip-flops.
What is the current instruction register?
In computing, the instruction register (IR) or current instruction register (CIR) is the part of a CPU’s control unit that holds the instruction currently being executed or decoded.