basics of programmable logic devices?

Question

i want very basics of this topic this is my seminar topic

Answer 1

basic is that it executes a fixed sequence of instructions.

these instructions can be conditional jumps allowing the program to alter the sequence.

Answer 2

Programmable logic devices are devices which contain large numbers of logic elements (of various sorts) whose interconnections may be 'programmed' either with fuses or the equivalent of CMOS PROM cells. The interconnections determine what the overall logic function(s) of the device is(are).


Doug

Answer 3

PLD's cover a wide range of devices, from the simple "Gate Array" to complex "Processing arrays".
I suggest you look at manufacturer's websites, such as ATMEL, PHILIPS, NAT. SEMICONDUCTORS, MAXIMS etc.
There, you will find the devices' data sheets.
From there, you will learn how to program them.
(The field is too vast to expand it here).
Good luck!