Digital Electronics - Digital Concepts - Discussion

Can any one explain about generic array logic.

The Generic Array Logic (also known as GAL) device was an innovation of the PAL (Programmable Array Logic) and was invented by Lattice Semiconductor. The GAL was an improvement on the PAL because one device was able to take the place of many PAL devices or could even have functionality not covered by the original range. Its primary benefit, however, was that it was eraseable and re-programmable making prototyping and design changes easier for engineers.

isn't a cmos device..?

The GAL was an improvement on the PAL because one device was able to take the place of many PAL devices or could even have functionality not covered by the original range. Its primary benefit, however, was that it was eraseable and re-programmable making prototyping and design changes easier for engineers.

Generic array logic has reprogrammable AND array, fixed OR array and reprogrammable output logic. And it is cmos based.

What is cmos?

(CMOS) complementary metal oxide semiconductor. It's a chip. CMOS put on motherboard.

Complementary metal oxide semiconductor(CMOS) is a combination of both NMOS and PMOS. CMOS is preferred when low power consumption is required. In CMOS circuit PMOS act as Pull up transistor and NMOS as pull down transistor.

What is pull up transister and pull down transister. Where it is used?

What is the diff btw pullup and pull down transistors?