A
Ace
- Jan 1, 1970
- 0
Hi
Forgive my ignorance, but I'm a new at this and haven't much of a clue. I'm trying to build a circuit I've designed with NAND gates, but am slightly confused as to the operation of the 7400 quad 2-input NAND gates chip. I need to connect pin 7 to 0V, but does pin 14 (Vcc) need to be supplied with 5V? And then the inputs to the NANDs should be supplied with 5V for high I presume... And for low do they need to be connected to 0V, rather than left disconnected?
Logic design programs are all fine and dandy, but only when you are faced with chips in the flesh you realise how little you know.
Many thanks IA.
Adrian
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Forgive my ignorance, but I'm a new at this and haven't much of a clue. I'm trying to build a circuit I've designed with NAND gates, but am slightly confused as to the operation of the 7400 quad 2-input NAND gates chip. I need to connect pin 7 to 0V, but does pin 14 (Vcc) need to be supplied with 5V? And then the inputs to the NANDs should be supplied with 5V for high I presume... And for low do they need to be connected to 0V, rather than left disconnected?
Logic design programs are all fine and dandy, but only when you are faced with chips in the flesh you realise how little you know.
Many thanks IA.
Adrian
--------------= Posted using GrabIt =----------------
------= Binary Usenet downloading made easy =---------
-= Get GrabIt for free from http://www.shemes.com/ =-