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Q. Interfacing of keyboards?
The keyboard employs a special Input/output port which is similar to a serial port however doesn't explicitly follow the RS-232 serial port standard. In place of multiple data and handshaking signals as in RS-232 the keyboard employs just two signals by which it manages a bi-directional interface with its own set of commands.
Employing its elaborate handshaking mechanism keyboard and PC transmit commands and data to each other. USB keyboards work in a different way by using USB coding and protocol.
What are the advantages and disadvantages of a Smart Card? Advantages of Smart Card: 1. It gives convenience & support for multiple currencies over borders. 2. Used
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Explain the outsourcing barriers that an organization faces. 1. Critical operations that cannot be outsourced. 2. Negative customer reaction. 3. Employee resistance. 4
Differentiate between Batch Operating System and Time Sharing Operating System? Batch operating systems : A batch is a sequence of jobs. Such batch is submitted to batch proce
A Scanner is a device which allows you to capture photographs or drawings or text from tangible sources (paper or slides etc.) in electronic form. Scanners work by detecting differ
What are concentrators? Explain how it helps in connecting number of subscribers. In rural areas, subscribers are usually dispersed. This is both unessential and expensive to g
Disadvantage and Advantage of mutual-exclusion implementation with semaphores. Disadvantage: Mutual-exclusion solutions specified by semaphores require busy waiting. Tha
Configure port A for the lower 4 bits to be inputs and the upper 4 bits to be outputs. The program should chase a logic one from Pa4 -> Pa7, depending upon the condition of Pa0-Pa3
What is Algorithm Design Technique? An algorithm design method is a general approach to solving problems algorithmically that is applicable to a variety of proble
Q. What do you mean by Linker? For modularity of your programs it is better to break your program in numerous sub routines. It's even better to put common routine such as read
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