What are the concepts of a computer?

Answer 1

To perform a given task an appropriate program consisting of a list of instructions is stored in the memory. Individual instructions are brought from the memory into the processor, which executes the specified operations. Data to be stored are also stored in the memory.

• Examples: - Add LOCA, R0
• This instruction adds the operand at memory location LOCA, to operand in register R0 & places the sum into register.
• This instruction requires the performance of several steps,

1. First the instruction is fetched from the memory into the processor.
2. The operand at LOCA is fetched and added to the contents of R0
3. Finally the resulting sum is stored in the register R0

• The preceding add instruction combines a memory access operation with an ALU Operations. In some other type of computers, these two types of operations are performed by separate instructions for performance reasons.
• Load LOCA, R1 Add R1, R0 Transfers between the memory and the processor are started by sending the address of the memory location to be accessed to the memory unit and issuing the appropriate control signals. The data are then transferred to or from the memory.

Answer 2

Instructions

Operational details of processor

Registers

Operating steps

Answer 3

computer robot has security the computer.