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The most common type of non-volatile memory is the ROM device. This device is read only and the data is masked into the chip during manufacture. Variations of the ROM are one off programmable ones (PROM), erasable ones (EPROM) using UV light, electrical erasable ones (EEPROM). These devices allow the user to blow them with programs and re-program if incorrect. As engineers we will often use the EPROM version, the pinning details are shown below
The internal structure of the EPROM is similar the SRAM, but does not require a write pin; it employs light sensitive fuses to hold the data.
The actual device has a window in it, this enables the device to be cleaned using UV light, usually this window is covered up to prevent slow eraser by normal light.
What is a path name? A pathname is the path from the root by all subdirectories to a specified file. In a two-level directory structure a user name and a file name describe a
defination of query ?
Q. What do you mean by Mouse Protocols? Mouse protocol is the digital code to that signal from the mouse gets converted. There are four main protocols: Microsoft, Mouse Systems
In the shared-memory programming model, tasks share a common address space, which they read and write asynchronously. Several mechanisms such as locks / semaphores may be used to c
The Utilization Count shows the status of each processor in a specific mode i.e. Overhead mode, busy mode, and idle mode with respect to the progress in time as shown in Figure.
Explain Gray Code Ans. Gray Code 1. Extremely useful code. Also termed as reflected code. 2. All gray code is different from the preceding and succeeding codes thr
What is an operating system? An operating system is a program that handles the computer hardware. It acts as an intermediate among users of a computer and the computer hardwar
Why EPROM chips are mounted in packages that have transparent window? Since the erasure needs dissipating the charges trapped in the transistors of memory cells. This can be co
A script kept information on potential subjects for an experiment in a vector of structures known as "subjects". The following show an example of what the contents may be: >> subj
What is parsing? The target of parsing is to find out the syntactic validity of a source string. A tree is built for use through subsequent phase of compiler, if the string is
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