What is the use of RRC instruction?
The RRC instruction rotates the eight bits in the accumulator and the one bit in the carry flag right one bit position. Bit 0 of the accumulator is rotated into the carry flag while the original value of the carry flag is rotated in to bit 7 of the accumulator.
When we use RRC instruction once in 8085 the number is?
Discussion Forum
| Que. | When we use RRC instruction once in 8085, the number is |
|---|---|
| b. | divided by 2 |
| c. | multiplied by 4 |
| d. | divided by 4 |
| Answer:divided by 2 |
What is the addressing mode of RRC?
The way of specifying data to be operated by an instruction is called addressing mode. In immediate addressing mode the source operand is always data. If the data is 8-bit, then the instruction will be of 2 bytes, if the data is of 16-bit then the instruction will be of 3 bytes.
What is the function of RAR instruction in microprocessor?
In 8085 Instruction set, RAR stands for “Rotate Accumulator Right involving Cy flag in rotation”. It rotates the Accumulator contents to the right by 1-bit position.
What is sphl instruction?
In 8085 Instruction set, SPHL is an instruction with the help of which Stack Pointer will get initialized with the contents of register pair HL. It is an indirect way of initializing the stack pointer.
How is binary calculated?
To convert integer to binary, start with the integer in question and divide it by 2 keeping notice of the quotient and the remainder. Continue dividing the quotient by 2 until you get a quotient of zero. Then just write out the remainders in the reverse order. Here is an example of such conversion using the integer 12.
What is a 3 bit adder?
The least significant bits (those on the right) are 0 and 1, giving a sum of 1 with no carry. There is no carry in from a previous stage. The next bits are 1 and 1 with no carry in, giving a sum of 0 and a carry of 1. The most significant bits are both 1 with a carry in of 1.
What is a full adder used for?
A full adder circuit is central to most digital circuits that perform addition or subtraction. It is so called because it adds together two binary digits, plus a carry-in digit to produce a sum and carry-out digit. It therefore has three inputs and two outputs.
What is a 4-bit adder?
General Description. These full adders perform the addition of two 4-bit binary numbers. The sum (∑) outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit. These adders feature full internal look ahead across all four bits.