Comparison between risc and cisc - computer architecture, Computer Engineering

Assignment Help:

Comparison between risc and cisc - computer architecture:

CISC 

Emphasis on hardware 

Includes multi-clock

complex instructions 

Memory-to-memory:

"LOAD" and "STORE"

incorporated in instructions

Small code sizes,

high cycles per second 

Transistors used for storing

complex instructions 

RISC 

Emphasis on software 

Single-clock,

reduced instruction only 

Register to register:

"LOAD" and "STORE"

are independent instructions

Low cycles per second,

large code sizes 

Spends more transistors

on memory registers 

Though, the RISC strategy also brings some very significant advantages. Because each instruction need only one clock cycle to execute, the whole program will execute in about the same amount of time as the multi-cycle "MULT" command. These RISC "reduced instructions" needed less transistors of hardware space than the multifaceted instructions, leaving more space for general purpose registers. Because all of the instructions execute in a uniform amount of time (for example: one clock), pipelining is possible.

Separating the "STORE" and "LOAD " instructions in fact reduce the amount of work that the computer have to perform. After the execution of CISC-style "MULT" command, the processor automatically clear the registers. If one of the operands required to be used for another computation, the processor has to re-load the data from the memory bank into a register. In RISC, the operand will leave in the register until another value is loaded in its place.

 

 


Related Discussions:- Comparison between risc and cisc - computer architecture

Introduction to parallel computing, Introduction  To Parallel Computing ...

Introduction  To Parallel Computing Parallel computing has been a subject of importance in the computing community over the last few years. Ever-growing volume of databases and

Positive logic nand gate is equivalent to negative logic nor, Show that a p...

Show that a positive logic NAND gate is equivalent to negative logic NOR gate. Ans:  Positive logic denotes True or 1 with a high voltage and False or 0 with a low volt

Explain working of counters, Q. Explain working of Counters? A counter ...

Q. Explain working of Counters? A counter is a register that goes through a predetermined sequence of states when clock pulse is applied. In principle value of counters is incr

Secondary storage - computer architecture, Secondary storage: Secondar...

Secondary storage: Secondary storage (or external memory) differs from primary storage in that aspect it is not accessible by the CPU directly. The computer typically uses its

Types of structure charts, Types of Structure Charts Transaction struc...

Types of Structure Charts Transaction structure - control module calls subordinate modules, each of which handles a certain transaction More afferent processes Le

What is state and state diagram, What is state and state diagram? A sta...

What is state and state diagram? A state is an abstraction of values and links of an object. Set of values and links are grouped together into a state according to the group be

Modality and cardinality, Ask question #Midifference between cardinality an...

Ask question #Midifference between cardinality and modality nimum 100 words accepted#

What is dialog module, What is dialog Module? A dialog Module is a call...

What is dialog Module? A dialog Module is a callable sequence of screens that does not belong to a certain  transaction. Dialog modules have their module pools, and can be know

Database management subsystem, (a) Explain, using suitable examples, the fu...

(a) Explain, using suitable examples, the functions of each of the sub system mentioned in the context of a large chain of supermarkets (i) Database Management Subsystem (ii)

Explain the working of linker, Explain the Working of Linker? Linker a...

Explain the Working of Linker? Linker as well called as link editor and binder. A linker is the program that combines object modules to form an executable program. Several pro

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd