What are the differences between RISC and CISC?
What are the differences between RISC and CISC?
These instructions interact with memory by using complex addressing modes. CISC processors reduce the program size and hence lesser number of memory cycles are required to execute the programs. This increases the overall speed of execution….Difference between RISC and CISC processor | Set 2.
| CISC | RISC |
|---|---|
| Condition codes are used. | No condition codes are used. |
What are the characteristics of RISC and CISC architecture?
Difference –
| RISC | CISC |
|---|---|
| Requires more number of registers | Requires less number of registers |
| Code size is large | Code size is small |
| An instruction execute in a single clock cycle | Instruction takes more than one clock cycle |
| An instruction fit in one word | Instructions are larger than the size of one word |
What are the advantages of large register file in RISC?
Large register files have many advantages. If used effectively they can: 1) reduce memory traffic by removing load and store operations; 2) improve performance by decreasing path length; and 3) decrease power consumption by eliminating operations to the memory hierarchy.
What is RISC Mcq?
Answer: b. Explanation: The RISC stands for Reduced Instruction Set Computer. 3.
What is the difference between CISC and RISC?
• Most processors based on complex instruction set computer consume more power and dissipate more heat than RISC-based ones. • The rationale behind CISC centers on minimizing the memory requirement.
What are the disadvantages of the RISC processors?
The first level cache of the RISC processors is also a disadvantage of the RISC, in which these processors have large memory caches on the chip itself. For feeding the instructions, they require very fast memory systems.
What are the advantages of the CISC architecture?
It is also less expensive than hard-wiring a control unit. • Chip designers can make CISC processors upward compatible because of the ease in microcoding new instructions. • The architecture reduces the amount of work that the compilers have to do because the instructions are already high-level.
What are the key characteristics of RISC architecture?
A key characteristic of RISC architecture is that it uses simpler instructions, operates at one instruction per cycle, and has a fixed instruction size. To compare, a complex instruction set computer or CISC architecture works by combining simple instructions into a single complex one, performing multiple operations per single operation.