Short Thinks About Asus EEE PC

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Short Thinks About Asus EEE PC

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By : Vlad Vistac 9 or more times read

Submitted 2010-03-30 14:19:47

We Owe a Debt to Early Computer Bus Development

Why was there such a rush in the development of the vintage computer bus?

All in all there were a numbwer of ongooing improvements. These included. 32 bit widdths. Bus mastering. Less suscepptible to noise in that they were quiieter in signal transmnission. More convenience of steup of add on boars via software.

The ISA bus came in only 8 bit and 16 bit formats. Whereas the ltaer 386 and 486 chips , in both the DX and SX formats while they did have a 32 bit path were hobbled by the ISA bus. As a result they could never realize their true 32 bit speed potetial. Later buses such as the MCA and EISA busses were able to overocme these inherent limitations.

Thee data hihways referred to as : busses are the data transmission lines aroud the PCs. The bus serves as the path for information transmission around the PC. True this rouyting is controlled by the CPU. However as that point in vintage commputing history this was not an issue. The PCs were staand alone single CPU unts.

However as time went on and PCs got faster and more complicated with less expensive additional CPUs handling othrer tasks witjhin the PCs events became dicer.Onboard peripherals themselpves began to have buillt in CPUs. CPUS in different maners began to be found in such peripherals as hard drives, sound and video czards.

The overall computer syystem may become much more efficient if these in essence peripheral CPUs can communicae directly with each other. without having to use the main CPU as an intermediary. Hence MCA and EISA were developed with these roles in mind. The concept became known as bus masetring.

Bus mastering involvs the concept that the peripheral CPUS coyuld request permission to take over the bus for a shot period of time. The main CPU would grant permission for them to take over the bus, and it would temporarily drop out of the loop, enabling swwift communications between for example the hard drive and floppy disk drive.

As computer busses deveolped and had the inherent abilities to transfer more and more data in a given time priod noise beccame an isse. The ISA bus was fairly noise prone because it relied on triggered interrupts. Whenever the voltage level on the data line of the bus exceeded a givne threshopld value then Edge Triggering would result.

The alternative to this sitaution where Edge Triggering could result is leel triggering wheere it is requied that the transmitting hold and achive the higher voltyage level in order for data to be recopgnized by the devices on the bus. Edge Triggering however can lead to transients that is bref power surrges that can confuse the devices on the bus into thining that data is on the bus when it is not. Luckily levbel triggering loers the noise lvel and both MCA and EISA emmploy it.

As a resut of all of these inherent benefits MCA and EISA came to supprot the idea, wich we know take for granted, of innstant software configurations. There were no switches or jumpers on add in MCA or EISA boards. Although we take plug and play instant configuration of mother boards and peripherals such as sound, video or network cards for granted it was not always that way. We owe a lot to thesse early computer innovations of improving the computer bus.

Author Resource:- Here you can learn more about: asus eee Thank you

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<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN' 'http://www.w3.org/TR/html4/loose.dtd'>; <html><head><title>Article2008.com | Short Thinks About Asus EEE PC</title></head><body><h3>Short Thinks About Asus EEE PC</h3> By: Vlad Vistac We Owe a Debt to Early Computer Bus Development Why was there such a rush in the development of the vintage computer bus? <pre><code> All in all there were a numbwer of ongooing improvements. These included. 32 bit widdths. Bus mastering. Less suscepptible to noise in that they were quiieter in signal transmnission. More convenience of steup of add on boars via software. The ISA bus came in only 8 bit and 16 bit formats. Whereas the ltaer 386 and 486 chips , in both the DX and SX formats while they did have a 32 bit path were hobbled by the ISA bus. As a result they could never realize their true 32 bit speed potetial. Later buses such as the MCA and EISA busses were able to overocme these inherent limitations. Thee data hihways referred to as : busses are the data transmission lines aroud the PCs. The bus serves as the path for information transmission around the PC. True this rouyting is controlled by the CPU. However as that point in vintage commputing history this was not an issue. The PCs were staand alone single CPU unts. However as time went on and PCs got faster and more complicated with less expensive additional CPUs handling othrer tasks witjhin the PCs events became dicer.Onboard peripherals themselpves began to have buillt in CPUs. CPUS in different maners began to be found in such peripherals as hard drives, sound and video czards. The overall computer syystem may become much more efficient if these in essence peripheral CPUs can communicae directly with each other. without having to use the main CPU as an intermediary. Hence MCA and EISA were developed with these roles in mind. The concept became known as bus masetring. Bus mastering involvs the concept that the peripheral CPUS coyuld request permission to take over the bus for a shot period of time. The main CPU would grant permission for them to take over the bus, and it would temporarily drop out of the loop, enabling swwift communications between for example the hard drive and floppy disk drive. As computer busses deveolped and had the inherent abilities to transfer more and more data in a given time priod noise beccame an isse. The ISA bus was fairly noise prone because it relied on triggered interrupts. Whenever the voltage level on the data line of the bus exceeded a givne threshopld value then Edge Triggering would result. The alternative to this sitaution where Edge Triggering could result is leel triggering wheere it is requied that the transmitting hold and achive the higher voltyage level in order for data to be recopgnized by the devices on the bus. Edge Triggering however can lead to transients that is bref power surrges that can confuse the devices on the bus into thining that data is on the bus when it is not. Luckily levbel triggering loers the noise lvel and both MCA and EISA emmploy it. As a resut of all of these inherent benefits MCA and EISA came to supprot the idea, wich we know take for granted, of innstant software configurations. There were no switches or jumpers on add in MCA or EISA boards. Although we take plug and play instant configuration of mother boards and peripherals such as sound, video or network cards for granted it was not always that way. We owe a lot to thesse early computer innovations of improving the computer bus. </pre></code> Author Resource:-> Here you can learn more about: <a href="http://thinklaptops.net/category/asus/">asus eee</a> Thank you Article From <a href='http://article2008.com/'>Article2008.com</a> </body></html>

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