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Q. What is Capacitor-Based Keyboards?
These keyboards are based on the idea of Capacitance. A simple capacitor comprises a pair of conductive plates having opposite charges and separated by an insulator. This arrangement produces a field between plates proportional to closeness of plates. Changing the distance between plates roots current to flow. Capacitive keyboards have etched circuit boards with tin and nickel-plated copper pads performing as capacitors under every key (a key is technically known as a station). Every key press presses a small metal-plastic circle down causing electric flow. These keyboards work well however have the drawback that they follow an indirect scheme though they have a longer life than contact-based keyboards. These keyboards were initiated by IBM.
Q. Describe the basic aspects of ENIAC? The main aspects of ENIAC can be summarized as: ENIAC was a general purpose-computing machine in that vacuum tube technology was
Write the truth table for a clocked J-K flip-flop that is triggered by the positive-going edge of the clock signal. Ans. Logic diagram of JK flip flop Truth T
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Develop a RPN rational number expression evaluator (REEval). The learning objectives are: improved procedural programming skills improved confidence in designing and
Q. What do you mean by Software Poll? In this scheme on occurrence of an interrupt, processor jumps to an interrupt service program or routine whose job is to poll (roll call
The address bus is unidirectional due to the address information is always given by the Micro Processor to address a memory location of an input or output devices.
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Explain Star topology. A network utilizes a star topology if each computer attach to a central point. The following figure demonstrates the concept: Star Topology
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