What is the operation principle of ROM, SRAM and DRAM cell?

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cyw1984

Joined: 06 Sep 2005
Posts: 45

07 May 2007 18:32 What is the operation principle of ROM, SRAM and DRAM cell?

thanks................

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The Joy of Electronics

Joined: 22 Dec 2006
Posts: 158
Helped: 11

07 May 2007 23:02 Re: What is the operation principle of ROM, SRAM and DRAM ce

Digital circuit could be implemented in a variety of ways one of whch is using a Rom which is a fixed AND and fixed OR Array. SRAMs and DRAMS, on the other hand are two types of Random Access Memories. In the former The informathion is stored Statically which means it does not need to be refreshed but in the latter the information has to be refreshed periodically in order to be sustained. This is because the information is stored as voltages in capacitors which tends to discharge with time.

Hope this got u off the hook buddy!

cydi

Joined: 12 Dec 2006
Posts: 169
Helped: 11

08 May 2007 8:55 What is the operation principle of ROM, SRAM and DRAM cell?

Basically, a RAM cell is nothing but a bi-stable - like circuit. You can set or reset the state, depending on the bit reqd. SRAM and DRAM differs in the way charge is stored..