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How are devices represented in UNIX?
All devices are shown by files called special files that are located in /dev directory. Therefore, device files and other files are named and accessed in the similar way. A 'regular file' is just an ordinary data file in the disk. A 'block special file' determines a device with characteristics same to a disk (data transfer in terms of blocks). A 'character special file' shows a device with characteristics same to a keyboard (data transfer is by stream of bits in sequential order).
What is Error detection code? It is a binary code that notice digital errors during transmission. The detected errors cannot be correct but the presence is shown.
Elucidate in brief the functions of the clock generator chip, 8284. 8284 Clock generator: 8284 is an ancillary component to the microprocessors. Without clock generator, many
What is Web Mail Services? Web-based email services are also called as web mail or HTTP email. Unlike traditional POP email, web mail can be accessed from any PC using any web
Convert hexadecimal BCH to decimal of form 0100 1000. Converting the hexadecimal BCH to decimal number firstly convert given number into two's compliment that is: 0100100
desing mode level counter starting at 0011 using D flipflop
Explain Time Division Switching. Time Division Switching: A switching component can be shared at the same time with number of active speech circuits. It is the principle of
Q. Describe the Size and Speed of Scanners? Before actual scanning, a quick, low resolution scan known as pre-scan is made to preview the image and select scanning area. After
Replacement and substitution: However, equivalences allow us to change one sentence with another without affecting the meaning, it means we know already that replacing one sid
What is the difference between Swapping and Paging? Swapping: Entire process is moved from the swap device to the major memory for implementation. Process size must be less t
Explain the Action-object matrix A matrix showing how update actions influence objects. It may be considered to be part of user object model as it summarizes user object ac
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