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Device drivers are special programs installed by config.sys file to control installable devices. So personal computers can be expanded at some future time by installation of new devices.
Device driver is .com file organized in 3 parts.
1) The leader
2) The strategy procedure
3) The interrupt procedure
The driver has either .sys or .exe extension and is originated at offset address 0000h.
What is meant by refreshing of the screen? Some method is required for maintaining the picture on the screen. Refreshing of screen is completed by keeping the phosphorus glowi
Q. What is Accumulator Register? Accumulator Register (AC): This register is used to store data temporarily for computation by Arithmetic and logic unit (ALU). AC generally c
Explain in detail about Touch screens For people who can't use a keyboard allowing input; also helps people with learning difficulties since icons are easier to understand
What is centralized SPC, what are its modes of operation? In this centralized control, all the control equipment is replaced through a single processor that must be quite power
what is process management ?
Define Cloud Computing with example. Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., se
Program counter and Stack pointer all have 16 bits.
Discuss two main approaches to identify free memory area in a heap. Two popular systems to identify free memory areas as a result of allocation and de-allocations in a heap are
Q. What is disk access time? The disk access time has two key components: Seek Time: Seek time is the time for disk arm to move heads to the cylinder comprising the desi
What are the drawbacks of Electronic Data Interchange processes? Disadvantages of EDI processes are given below: 1. The X12 standard is so huge and general 2. Electron
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