What is the difference between SN74HC vs CD74HC series.
- Thread starter bobby500
- Start date
You're just on top of everthin' -- 'aintcha boy?
Photographic memory for most everything except my wife's instructions.
You never know what's going to trigger a memory. Yesterday an old friend phoned me to ask about vacuum tube testers and I answered a capacitor question he asked me 7 years ago.
He had forgotten what caused the capacitor question, and it was nothing about tube testers, but it was part of the mental inventory I want him to have so we can communicate better.
He had forgotten what caused the capacitor question, and it was nothing about tube testers, but it was part of the mental inventory I want him to have so we can communicate better.Almost like the law of selective gravitation.
schmitt trigger
- Joined Jul 12, 2010
- 900
And it can be any sensorial input also.
A couple of months ago while visiting NYC, we went to Chinatown.
From a restaurant came a very particular odor that reminded me from a visit to Taiwan in the late 80s.
I had gone there to help install some automatic testers all employing the HPIB bus.
Immediately to my mind came the rotary encoders which would set the physical addresses, the bulky connectors, the slanted hp logos, etc.
A side rant, Back then the name Hewlett-Packard meant really something. It meant the highest performance, highest quality, broadest line of test equipment available.
I picked up on a garage sale a 45 year old audio oscillator. It is not only working, but the setpoint frequency accuracy is better than 5%, 34 years after its last calibration. It still has the CAL sticker attached.
A couple of months ago while visiting NYC, we went to Chinatown.
From a restaurant came a very particular odor that reminded me from a visit to Taiwan in the late 80s.
I had gone there to help install some automatic testers all employing the HPIB bus.
Immediately to my mind came the rotary encoders which would set the physical addresses, the bulky connectors, the slanted hp logos, etc.
A side rant, Back then the name Hewlett-Packard meant really something. It meant the highest performance, highest quality, broadest line of test equipment available.
I picked up on a garage sale a 45 year old audio oscillator. It is not only working, but the setpoint frequency accuracy is better than 5%, 34 years after its last calibration. It still has the CAL sticker attached.
Last edited:
When I worked there in the 70's, it meant "Have Pride" to the employees.
