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Q. Explain Keyboard Input and Video output ?
A Keystroke read from keyboard is termed as a console input and a character displayed on the video screen is known as a console output. In assembly language reading and displaying character is most tiresome to program. Though these tasks were greatly simplified by convenient architecture of 8086/8088. Thatarchitecture offers for a pack of software interrupt vectors starting at address 0000:0000.
The benefits of this type of call is that it appears static to a programmer however flexible to a system design engineer. For illustration INT 00H is a special system level vector which points to the 'recovery from division by zero' subroutine. If new designer come and want to move interrupt location in memory it adjusts entry in the IVT vector of interrupt 00H to a new location. So from the system programmer point of view it's relatively easy to change vectors under program control.
Q. Convert the following from hexadecimal to binary, decimal, BCD and octal. a) 111 b) ABC.25 c) 2.C Q. Convert the following from BCD to binary, decimal, hexadecimal an
Q. Why are high-speed memories required? Is the main memory not a high-speed memory? The answer to second question is absolutely 'No' though why so? Then if memories are slowe
What is a Size Category? The Size category verifies the probable space needs of the table in the database.
Explain What is the difference among embedded systems and the system in which RTOS is running? Ans) Embedded system can have RTOS and cannot have also. It depends on the requi
How is a multidimensional array defined in terms of a pointer to a collection of contiguous arrays of lower dimensionality ? C does not have true multidimensional arrays. Howev
Backward Chaining: In generally given that we are only interested in constructing the path whether we can set our initial state to be the theorem statement and search backward
What is elapsed time of computer system? The total time to implement the total program is known as elapsed time. It is affected by the speed of the processor, the disk and the
Define main memory and auxiliary memory? The memory unit that communicates directly with the cpu is known as main memory [RAM].Devices that give backup storage are known as aux
E-mail system is mostly used for sending message electronically to group or individuals of individuals in inter and intra office environment. It needs networks to connect them. In
Vector-Vector Instructions In this category, vector operands are fetched from vector register and accumulated in another vector register. These instructions are indicated with
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