• Field programmable gate arrays

    12-10-2019

    Field programmable gate arrays

    The advancement in on-chip field programmable techniques combined with ever increasing packing densities has led to the introduction of field programmable gate arrays or FPGAs....
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  • Combinationall Logic Design Example : a four-bit adder

    12-10-2019

    Combinationall Logic Design Example : a four-bit adder

    In this section we consider the design of a four-bit adder; i.e. a circuit that adds together two four-bit binary numbers....
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  • Standard cell

    26-09-2019

    Standard cell

    The advantages of fast turnaround time and relatively low cost offered by gate arrays is counterbalanced by several problems....
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  • CAD tools for field programmable logic

    26-09-2019

    CAD tools for field programmable logic

    The programming of field programmable logic devices is implemented directly via a computer. The software needed for PALs and PLAs is usually a simple matter of producing a programming file called a fu...
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  • Full custom

    25-09-2019

    Full custom

    This is the traditional method of designing integrated circuits. With a standard cell and gate array the lowest level that the design is performed at is the logic gate level, i.e. NAND, NOR, D-Type, e...
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  • Field programmable loglc

    25-09-2019

    Field programmable loglc

    ​So far we have seen two extremes in the design options available to a digital designer-namely standard products and mask programmable ASICs....
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  • Introduction to asunchronous sequential circuit design

    20-09-2019

    Introduction to asunchronous sequential circuit design

    Introduction to asunchronous sequential circuit design...
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  • Asynchronous and synchronous counters

    20-09-2019

    Asynchronous and synchronous counters

    To divide the counters we will look at into two types: asynchronous and synchro- nous. When used with respect to counters' these adjectives describe whether the Alip-flops holding the states of the ci...
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