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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.
Firewalls operate by Creening packets to/from the Network and give controllable filtering of network traffic.
Explain File scope File scope: The variables and functions with file scope appear outside any block or list of parameters and are accessible from any place in the translation
External interface is interface between I/O interface and peripheral devices. Interface can be characterised into 2 main categories: (a) parallel interface and (b) serial interface
Q. Show the example of internet address? The following can be a typical person understandable address on Internet: VVS @ expertsmind.us VVS is an username which in gene
Why address bus is unidirectional and data bus is bidirectional? Ans) Because there is no require address transaction among processor and peripheral device but data bus is req
Distinguish between enhancement mode and depletion mode metal oxide semiconductor field effect transistors giving their characteristics. Ans. Enhancement mode and depleti
What are the Advantages of store program control (I) Easy to maintain (II) Easy to control (III) Wide range of services can be provided to customers (IV) Flexible
A ring counter consisting of five Flip-Flops will have ? Ans. A ring counter have 5 states while consisting of Five Flip-Flops.
How speech is transmitted in a digital switching environment using PCM/TDM? A digital carrier system is a communications system which uses digital pulses quite than analogue si
Incidence Matrix: - This is the incidence matrix for an undirected group. For directed graphs, the vertex from where an edge is originating will have +1 and the vertex where the ed
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