1. Difference Between Cpu And Microprocessor In Tabular Form
2. Difference Between Microcontroller And Microprocessor

Microprocessor is an IC which has only the CPU inside them i.e. Only the processing powers such as Intel’s Pentium 1,2,3,4, core 2 duo, i3, i5 etc. These microprocessors don’t have RAM, ROM, and other peripheral on the chip. A Central Procession Unit (CPU) is the part of a computer that sequences and executes instructions. Other parts in the traditional computer architecture are the memory and the I/O. In the stone age days of computers a mainframe's CPU's occupied mu.

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Possible Duplicate:
What’s the difference between a microcontroller and a microprocessor?

Please inform me of the difference, if any.

Niklas RosencrantzNiklas Rosencrantz$endgroup$

marked as duplicate by stevenvh, Leon Heller, Dave Tweed♦, embedded.kyle, KortukOct 16 '12 at 14:57

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2 Answers

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A CPU (central processing unit) is the part of a computer that executes instructions. This can be implemented using a single IC, a number of ICs, discrete transistors or a room full of vacuum tubes.

A microprocessor is a single-chip implementation of a CPU.

Nowadays pretty much all CPUs for general use are microprocessors, causing the two terms to be practically synonymous.

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Difference Between Cpu And Microprocessor In Tabular Form

Do read the question (and answers) stevenh linked to, but your question is somewhat different.

A Central Procession Unit (CPU) is the part of a computer that sequences and executes instructions. Other parts in the traditional computer architecture are the memory and the I/O.

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In the stone age days of computers a mainframe's CPU's occupied multiple cabinets. Later a minicomputer's CPU occupied one or a few PCBs. The next step was to integrate a CPU on a single chip. That is what we call a microprocessor (uP).

From there the development forks:

• the CPU-on-a-chip is made more powerfull (faster, parallel execution, fast execution of complex instructions like divide and transcendentals), a cache is added, more CPU's are combined in one chip, etc. This results in the (mainly Intel) super-microprocessors of today.
• a moderately powerfull CPU (more powerfull than those in a uC, but less than those in a desktop CPU) is combined with a small boot ROM and a set of complex peripherals, like a video/lcd subsystem, mpeg decoder, wired or wireless ethernet interface, USB intefaces, etc. to cerate a 'system-on-a-chip'. These chips form the hart of modern set-top boxes and the small Linux systems (Beaglebone, Raspberry Pi, etc.) derived from them.
• The CPU is combined with memory and I/O on the same chip, creating a complete computer on a single chip. This is called a microcontroller (uC).

Wouter van OoijenWouter van Ooijen

Difference Between Microcontroller And Microprocessor

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