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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.
State the Tips of timescale directive Include a `timescale directive at the top of each module, even if there are no delays i n the module, since some simulators may require th
Data buffering is quite helpful for purpose of smoothing out gaps in speed of processor and I/O devices. Data buffers are registers that hold I/O information temporarily. I/O is pe
The while Loop The while loop repeats a statement until the test at the top proves false. As an example, here is a function to return the length of a string. int string_leng
Q. Writing down your own Interrupt Service Routines? Here are a few rules which should be kept in mind while writing down your own Interrupt Service Routines: 1. Use Int 21
A verification point is a point in a script that you make to confirm the state of an object across builds of the application-under-test.
Which TTL logic gate is used for wired ANDing ? Ans. Open collector output, TTL logic gate is used.
Object-Oriented Control Architecture For Ams Manufacturing Introduction In recent past, the industrial sectors have started presenting additional inclination toward
List all seven layer of OSI model and describe function of application layer. The layers of OSI model are as follows: (1) The Physical Layer: It defines an interface in
What are the characteristics of semiconductor RAM memories? They are available in a wide range of speeds. Their cycle time range from 100ns to less than 10ns. The
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