22.214.171.124 describe the RISC architecture
126.96.36.199 describe the CISC architecture
188.8.131.52 compare RISC and CISC
CISC vs RISC
The two main types of computer processors are:
- Complex Instruction Set Computing (CISC)
- Reduced Instruction Set Computing (RISC)
- Complex Instruction Set
- Non-fixed size of instruction, e.g. instructions have variable format.
- Uses complex instructions each of which may take multiple cycles.
- Single register set, less registers than in RISC
- Many instructions and addressing modes are available.
- Has a complicated and expensive processor design.
- Has more components on CPU than a RISC processor
- Generates more heat
- Requires heat sink/fan
- Use less RAM
- Require more power
- Reduced Instruction Set.
- Fixed size of instruction
- A limited number of instructions is available.
- An instruction performs a simple task
- Complex tasks can only be performed by combining a number of simple tasks so a task may take a number of machine cycles.
- Can perform simple tasks very quickly.
- Simple processor design.
- Programs can run faster due to simpler instructions executing at a faster rate.
- Less components on CPU
- Produces less heat
- Use more RAM than CISC
- Used in tablets and mobile devices
- Name features for CISC and RISC.
- Explain differences between CISC and RISC.
- What type of processor is used for laptop? Why?