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What is difference between RISC and CISC?

Reduced instruction set computing RISC - refers to a type of microprocessor design that uses a simplified instruction set; it uses fewer instructions of constant size, each of which can be executed quickly....well mohan,the basic difference between them are as follows:-======================== ===CISCs Emphasis on hardware Includes multi-clockcomplex instructionsMemory-to-memory:" LOAD

Posted in Computers & Technology by D F MOHAN at 9:00 PM on September 28, 2008

CISC

A Complex Instruction Set Computer CISC supplies a large number of complex instructions at the assembly language level. Assembly language is a low-level computer programming language in which each statement corresponds to a single machine instruction. CISC instructions facilitate the extensive manipulation of low-level computational elements and events such as memory, binary arithmetic, and addressing

Posted in Computers & Technology by kash at 6:49 PM on May 12, 2008

What is RISC?

RISC, or Reduced Instruction Set Computer. is a type of microprocessor architecture that utilizes a small, highly-optimized set of instructions, rather than a more specialized set of instructions stands for "Reduced Instruction Set Computing,"and is pronounced "risk." It is arguably the fastest and most effiecient microprocessor technology available today. The RISC architechture

Posted in Computers & Technology by Aryan Gusain at 9:47 PM on July 01, 2008
Tags risc

what is the difference between "MEMORY ADDRESS REGISTER"MARand "PROGRAM COUNTER"PC?how do they work together with MBR and MDR??

Memory address register that hold the address of next memory location where the next instruction is to be executed. While the first instruction is being executed, the address of next memory location exotic memory interfaces exist, but this is the least that can work.The program counter, or shorter PC also called the instruction pointer, part of the instruction sequencer in some computers is a register

Posted in Computers & Technology by jayanth k at 6:37 PM on April 28, 2008
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CMP instruction comes under group - a Data transfer b Branching operations c Machine control operation d Logical operations

well, Logical operations>These carry out the usual arithmetic and logical operations e.g. 8086 cmp, add, sub, inc, and, or, xor instructions. Surprisingly, these are not frequently used instructions, and when used, it is often in conjunction with a conditional jump instruction rather than for general arithmetic purposes. Note that we have included the cmp instruction with the arithmetic

Posted in Computers & Technology by Nawraj at 10:06 PM on June 26, 2008

Why are program counter and stack pointer 16-bit registers?

hi thereProgram counter holds the address of either the first byte of the next instruction to be fetched for execution or the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction.Program counter holds

Posted in Computers & Technology by Nawraj at 2:24 AM on June 28, 2008

what is a microprocessor 8085 ?

supply. Clock oscillator and system controller were integrated on the chip. The CPU included serial I/O port. Two new instructions were added to 8085 instruction set. The CPU also included a few undocumented instructions. These instructions were supposed to be a part of the CPU instruction set, but at the last moment they were left undocumented because they were not compatible with forthcoming Intel

Posted in Computers & Technology by pargat singh at 9:25 PM on September 11, 2008

I want tabular difference between RISC and CISC

In the early days of computing, you had a lump of silicon which performed a number of instructions. As time progressed, more and more facilities were required, so more and more instructions were added. However, according to the 20-80 rule, 20 of the available instructions are likely to be used 80 of the time, with some instructions only used very rarely. Some of these instructions are very

Posted in Computers & Technology by dharmendra at 2:08 PM on September 22, 2008

Why bytecode? Can you reverse-engineer the code from bytecode?

Since instructions are processed by software, they may be arbitrarily complex, but are nonetheless often akin to traditional hardware instructions; stack machines are common, for instance. Different parts may often be stored in separate files, similar to object modules, but dynamically loaded during execution.The name bytecode stems from instruction sets which have one-byte opcodes followed

Posted in Computers & Technology by rocky singh at 3:06 AM on June 26, 2008

What is meaning of word " Computer"?

hello gupta A computer is a machine that manipulates data according to a list of instructions.The first devices that resemble modern computers date to the mid-20th century around 1940 - 1945 in machines ranging from fighter aircraft to industrial robots, digital cameras, and childrens toys.The ability to store and execute lists of instructions called programs makes computers extremely versatile

Posted in Computers & Technology by vishal gupta at 11:27 PM on June 11, 2008
Tags meaning, word

What is difference between RISC And CISC

In the early days of computing, you had a lump of silicon which performed a number of instructions. As time progressed, more and more facilities were required, so more and more instructions were added. However, according to the 20-80 rule, 20 of the available instructions are likely to be used 80 of the time, with some instructions only used very rarely. Some of these instructions are very

Posted in Computers & Technology by dharmendra at 5:52 PM on September 28, 2008

Which line will be activated when an output device require attention from CPU?

Program counter holds the address of either the first byte of the next instruction to be fetched for execution or the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction.An I/O controller

Posted in Computers & Technology by Nawraj at 2:23 AM on June 28, 2008

What is a OP code?

hi blog In computer technology, an opcode operation code is the portion of a machine language instruction that specifies the operation...to be performed. Their specification and format are laid out in the instruction set architecture of the processor in question which may be a general CPU or a more specialized processing unit. Apart from the opcode itself, an instruction normally also has one or more specifiers

Posted in Computers & Technology by blogger01 at 1:06 PM on May 21, 2008
Tags code

Clock Cycle

-crystal circuit, similar to those used in radio communications equipment.Some processors execute only one instruction per clock cycle.More advanced processors, described as superscalar, can perform more than one instruction per clock cycle.The latter type of processor gets more work done at a given clock speed than the former type. Similarly, a computer with a 32-bit bus will work faster at a given clock speed than a

Posted in Computers & Technology by Sid at 7:12 PM on May 29, 2008

what is difference btw assembly language and machine language ? and what is ROM ?

in from program memory, and the bits represent "instructions" as to what to do next.Thus machine language provides a way of entering instructions into a computer whether through switches, punched tape, or a binary file.Assembly language is a more human readable view of machine language. Instead of representing the machine language as numbers, the instructions and registers are given names

Posted in Computers & Technology by Chirag at 5:18 PM on April 17, 2008
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