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Q. What do you understand by Scan Codes?
A scan code is a code produced by a microprocessor in keyboard when a key is pressed and is unique to key struck. When this code is received by computer it reports an interrupt and looks up scan code table in BIOS and realize which keys have been pressed and in what combination. Special memory locations known as status bytes tell the status of locking and toggle keys for example Caps lock etc. Every key press produces two different scan codes - one on key-push down known as Make code and another on its popping back known as Break code. This two-key scheme enables the computer to tell when a key is held pressed down for example ALT key when pressing another key say CTRL-ALT-DEL.
Q. Explain Usenet and Newsgroups? In Internet there exists another way to meet people and share information. One such way is through Usenet newsgroups. These are special groups
What are the advantages of open source system? High-quality software Lesser hardware costs Integrated management No vendor lock-in Take control of our softwa
John Lindsay sells disks that have 25 software packages that show a variety of financial functions, including net present value, internal rate of return, and other financial progra
Q. What do you mean by Communication Traffic? Communication Traffic offers a pictorial view of communication traffic in interconnection network with respect to time in progress
Q. Show the characteristic of cache memory? The essential characteristic of cache memory is its fast access time. So very little or no time should be wasted when searching for
What is content addressable memory? The memory unit accessed by the content is known as an associative memory or content addressable memory. This type of memory is accessed con
What are superscalar processors? Several instructions start implementation in the same clock cycle, and the processor is said to use multiple issue. Such processors are capable
Q. Benefits of traditional hard disks and CD-ROM? CD-ROM is suitable for distribution of large amounts of data to a large number of users. CD-ROMs are a general medium these da
Kirc hoff's Voltage Law The sum of all the voltage drops around a closed circuit loop will add to zero V1+(-V2)+(-V3)+(-V4)= 0
A three stage switching structure supports 100 inlets and 400 outlets. Find the number of cross points, and the number of primary and secondary switches used in the design. We
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