Power/Gnd Terminology?

Oldbitcollector (Jeff)

Would someone mind giving a little history/definition on the following terms?

Vdd,Vcc,Vss

I understand what they represent, but I'd like to include an explanation in the
next Cookbook that a beginner would understand and be able to remember.
I can't seem to put my finger on a simple explanation, or memory aid.

Oldbitcollector

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
The comments and code above are proof that a million monkeys with a million propeller chips *could* write Shakespeare!

RDL2004

Basically they are the power supply pin designations for different transistor technologies.

This article will help:

http://en.wikipedia.org/wiki/Vdd

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
- Rick

Oldbitcollector (Jeff)

In otherwords, they are the mess they appear to be. [noparse]:)[/noparse]

I'll come up with something..

Oldbitcollector

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
The comments and code above are proof that a million monkeys with a million propeller chips *could* write Shakespeare!

D Faust

They aren't that bad (if you know about transistors) See: history section of link.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔

LOOKDOWN ThisThread, [noparse][[/noparse]Your_?, My_?, Cool_Thing], looknum
LOOKUP looknum, [noparse][[/noparse]1, 2, 3], subnum
ON subnum GOTO Hope_this_helps, Thanks!, WOW!!
END 

pwillard

I look at it like learning english, german and italian. No matter how hard you try, you still think in the first language you learned unless you reach GURU status. TTL nomenclature still rules for me... and it may take a 12 step program to get me to stop thinking that way.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔

---

There's nothing like a new idea and a warm soldering iron.

Whit

Thanks for asking. I always wondered too. The article sheds a little light on the subject. If you get a better story - I'm all ears or eyes - I guess.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Whit+


"We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney

Whit

Oldbit,

Was doing a little more reasearch on this and found this thread - http://forums.parallax.com/showthread.php?p=524143

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Whit+


"We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney

Post Edited (Whit) : 8/29/2007 3:32:55 AM GMT

MarkS

Since Parallax markets to the hobbyist HARD, it would be nice to seem them buck this "standard." I'd love to see some microcontrollers with power pins labeled +5/+3.3/+whatever and GND instead of Vcc/Vdd and Vss.

But that's just me...