What is execute cycle in computer?
The fetch execute cycle is the basic operation (instruction) cycle of a computer (also known as the fetch decode execute cycle). During the fetch execute cycle, the computer retrieves a program instruction from its memory. It then establishes and carries out the actions that are required for that instruction.
What happens in the execute cycle?
The main job of the CPU is to execute programs using the fetch-decode-execute cycle (also known as the instruction cycle). When a program is being executed, the CPU performs the fetch-decode-execute cycle, which repeats over and over again until reaching the STOP instruction.
What are the stages of the CPU cycle?
This process consists of three stages: fetching the instruction, decoding the instruction, and executing the instruction – these three steps are known as the machine cycle. A processor spends all of its time in this cycle, endlessly retrieving the next instruction, decoding it, and running it.
What are the two main cycles of a process execution?
As shown in Figure 5.2, a process instance has three main stages during its lifetime: (1) process instantiation, (2) process execution and (3) process termination.
What is the first step in the execution cycle?
Four steps of the machine cycle Fetch – Retrieve an instruction from memory. Decode – Translate the retrieved instruction into a series of computer commands. Execute – Execute the computer commands. Store – Send and write the results back in memory.
What is interrupt explain with flow chart?
The way that the interrupt is handled by the computer can be explained by means of the flowchart of Figure below. An interrupt flip-flop R is included in the computer. When R = 0, the computer goes through an instruction cycle. During the execute phase of the instruction cycle IEN is checked by the control.
What are the level triggering interrupt?
A level-triggered interrupt is requested by holding the interrupt signal at its particular (high or low) active logic level. A device invokes a level-triggered interrupt by driving the signal to and holding it at the active level.
Which interrupt can be temporarily ignored?
Discussion Forum
| Que. | An interrupt that can be temporarily ignored is |
|---|---|
| b. | Non-maskable interrupt |
| c. | Maskable interrupt |
| d. | High priority interrupt |
| Answer:Maskable interrupt |