Basically TTL uses transistors, and is rated at 5V only - CMOS uses MOSFET's and operates over a wider voltage range. CMOS, due to it's MOSFET construction also takes a great deal less current than TTL.
Basically TTL uses transistors, and is rated at 5V only - CMOS uses MOSFET's and operates over a wider voltage range. CMOS, due to it's MOSFET construction also takes a great deal less current than TTL.
'Metal Oxide Semiconductor Field Effect Transistor', have a look at **broken link removed** for more information. If you do a google search you will finds lots of references!.
There's not much need to know that sort of stuff, just consider a CMOS chip as a little plastic box with legs which performs a certain function.
There's no real need to know what's actually inside it - I'm quite happy in the belief that there are people a lot more clever than me putting little bits in plastic boxes to make my life easier :lol: