Introduction to microprocessors |
| Written by Michael D. | |
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The CPU (Central Processing Unit) is the most important chip in any system. It's considered to be the brain of the computer.
The first microprocessor was introduced in 1970 by Intel (named 4004). It ran at the speed of 108KHz. Four years later, Intel created the 8080 running at just over 2 Mhz. This microprocessor was used on the world's firs personal computer, named Altair. Also at this time, IBM started researching for their microprocessor, called POWER (Performance Optimization With Enhanced RISC).
Motorola created their 68000 series of microprocessors in 1979. These were implemented later in the Macintosh computer by Apple.
Fetching involves getting an instruction from the program memory. An instruction is represented tipically by a sequence of numbers (eg. 101000101). This fetching operation forced reaserching for better memory technologies; the memory was slow enough to make the microprocessor's power unusable.
Removing or adding a microprocessor can be a easy and safe operation if one knows what he is doing. It has a system called ZIF (Zero Insertion Force) that protects the processor's pins. As a caution, just remember to try not to touch the golden pins when working with a processor. After inserting it, it's wise to use a drop of thermal conductor paste betwen the microprocessor and a heatsink, to allow thermal transfer in the best conditions possible. Overheating due to heavy usage with poor ventilation will make the system instable and can harm it permantly.
These type of processors usually had no ventilation, since their surface was large enough to cool itself. In the 1990s, when both slot and socket were used, some adapters also appeared on the market, like slot card with socket.
written by za , November 18, 2007
what does microprocessor speed depend on? 8051 data bus system depend on expanded mode.
written by Malik , February 14, 2008
good side
written by Jameerdeen Nizar , February 20, 2008
what is the diffrent between the old and new Microprocessor? Please compare the two companies microprocessor?
written by Jameerdeen Nizar , February 20, 2008
how the microprocessor coordinate the other component?
written by kunal , March 15, 2008
very good
written by shahbaz , April 02, 2008
microprocessor archetacture
written by ARUN , April 04, 2008
I AM INTERESTED YOUR PROCESSOR NOTE BECAUSE I DO NOT KNOW FREEQUENCY LIKE 8008 &4004 THANK YOU
written by raj , July 16, 2008
what is tracing in 68000 microprocessor
written by laxman bisht , January 06, 2009
all knowledge of microprocessor
written by murali , March 05, 2009
what is themain difference between microprocessers and microcontrollers
written by amir , May 07, 2009
my system is running slow
written by Ayesha , June 20, 2009
suggest some best books on microprocessors and also let me know what kind of assignments i can give to my students regarding microprocessors.....
written by poornima , July 16, 2009
defination of data interface,address interface in brief
written by Muhammad Arif (Rawalpindi) Pakistan , July 23, 2009
I am searching microprocessor introductin to teach my students at the level of Diploma of Associate Engineer. Yet my purpose is not solved. Anyhow it is good information for bigneers, Thanks
written by Lucky , September 08, 2009
where can i find the motherboard details on the motherboard. thanks
written by MANISH KUMAR , September 09, 2009
SIR COULD YOU PROVIDE ME A NOTE ON PROCESSOR THAT CONTAIN IT'S HISTORY AS WELL AS TECHONOLOGY.... I.E WHOLE FUNCTION OF MICROPROCESSOR
written by samson , November 06, 2009
pls i want to know more about computer hardwares. including how to solve computer hardware problem. thanks. may God increase your knowledge. hope to read from you soon
written by reng rover , November 12, 2009
amicroprocessor with ( 256x16 ) ................memory locations ? ................address bus ? ................data bus thanks for helping :)
written by reng rover , November 12, 2009
any 1 can solve will have aprise
written by rathna , December 03, 2009
please send thehistory ofmicroprocessor
written by deepti chawla , February 08, 2010
HI ! Please solve my below query; Write two ARM assembly language routines, called postnet and zip. The postnet routine returns the six digit POSTNET code when a five digit ZIP code is passed into the routine. The register r0 is used to pass the five digit ZIP code into postnet. The zip routine returns the five digit ZIP code when a six digit POSTNET code and the position of the error is passed into the routine. The error position contains the position which is in error if (and only if) the checksum of the POSTNET code is incorrect. Position 0 corresponds to the least significant (rightmost) digit, and position 5 is the most significant (leftmost) digit. If the checksum is correct, the value of the error position is not used by the routine. Register r0 is used to pass the six digit POSTNET code into zip, and r1 is used to pass the error digit. Do you need more help? Ask now!
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| Last Updated ( Saturday, 23 June 2007 ) |