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TitleTimer 411
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limitation of employing the SSC in producing commercial timers before was due to the

relatively large area needed for building the control circuit [2]. The control circuit was

completely built using available standard SSI and MSI circuits. Throughout this

project the overall control circuit in addition to the other added features like display ,

control data entry …etc will be implemented on a single VLSI chip using FPGA ( Field

Programmable Gate Array) or other programmable technology, such as low cost

microcontrollers, according to the cost and the available tools. This new technologies

becomes today the best solution for implementing digital system on single chip without

going through the complex process of developing a special purpose IC. Digital design

using programmable Logic devices (PLD) or microcontrollers is a cost effective way to

save time, cost and get high system performance as regarding added features, power

consumption, sizing and reliability.

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