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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.
How many two-input AND and OR gates are required to realize Y=CD+EF+G ? Ans. Y=CD+EF+G No. of two i/p AND gates=2 No. of two i/p OR gates = 2 One OR gate to OR CD and EF
An exchange uses a -40 V battery to drive subscriber lines. A resistance of 250 ohms is placed in series with the battery to protect it from short circuits. The subscribers are req
What is an "on request Field" statement? ON REQUEST The ABAP/4 Module is known as only if the user has entered the value in the field value as the last screen display .Th
what is Throw-way model.
Parallelism Conditions As discussed earlier, parallel computing needs that the segments to be implemented in parallel must be free of each other. Thus, before implementing para
Define Micro operation. The operations implemented on data stored in the registers are called Micro operation. A microperation is an elementary operation performed on the infor
Q. Explain about RISC PIPELINING? Instruction pipelining is frequently used to increase performance. Let's consider this in context of RISC architecture. In case of RISC machin
Convert binary number in two's compliment form 0100 1000. Converting the binary number into 2's compliment from 0100 1000 is given below: 01001000 => 10111000
Can we display a list in a pop-up screen other than full-size stacked list? Yes, we can show a list in a pop-up screen using the command WINDOW with the additions beginning at
Minimize the following logic function using K-maps and realize using NAND and NOR gates. F(A,B,C,D) =?_m(1,3,5,8,9,11,15) + d(2,13).
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