my Master's thesis around 1992 was based around some power conservation ideas for battery powered devices to be used by special needs students all based on the 68HC11. thanks for the memories.
Thank you very much. I'm revisiting a project I designed and built back in the early 80s and appreciate the refresher. Use to be good with symbolic logic. A pleasure!
Love this stuff - Other common chips are 74LS245 ( Bidirectional Bus Buffer ) , 74LS240 , 74LS241. Then the 74LS573 and 574 parts which have the Inputs and outputs on opposite sides of the dip package. Are those TIL 311 Hexadecimal displays you have on that little board. Those displays are just beautiful but draw lots of current :)
Protip: use an LS573 for breadboarding instead of the LS373. It has the same logic, but Its pinout is straight through from one side to the other, and your wiring can be much tidier.
74 and 54 series logic was very popular 50 years ago when I was in school. I still have my vintage TI "The TTL Data Book" which was literally a golden oldie!
I'm not familiar with the 68HC11 but I do know (and love) the 6809. You can't clock the 6809 at a low frequency because the registers need a dram refresh. I wonder of the Hitachi one can?
my Master's thesis around 1992 was based around some power conservation ideas for battery powered devices to be used by special needs students all based on the 68HC11. thanks for the memories.
There was a time in the not too distant past where I was doing this type of interfacing on a regular basis. A good and informative information.
I've had so much fun with the 74 series IC's and my ZX Spectrum over the past 20+ years.
Thank you very much. I'm revisiting a project I designed and built back in the early 80s and appreciate the refresher. Use to be good with symbolic logic. A pleasure!
Love this stuff - Other common chips are 74LS245 ( Bidirectional Bus Buffer ) , 74LS240 , 74LS241. Then the 74LS573 and 574 parts which have the Inputs and outputs on opposite sides of the dip package. Are those TIL 311 Hexadecimal displays you have on that little board. Those displays are just beautiful but draw lots of current :)
HP 5082-7340
Wished i had gotten into this back in the 80s,myself, who knows were i would be today,Been backing up on your older videos all the time
Protip: use an LS573 for breadboarding instead of the LS373. It has the same logic, but Its pinout is straight through from one side to the other, and your wiring can be much tidier.
I love all the 500 series. It was like they got a do-over and made the pinouts make sense.
74 and 54 series logic was very popular 50 years ago when I was in school. I still have my vintage TI "The TTL Data Book" which was literally a golden oldie!
I'm not familiar with the 68HC11 but I do know (and love) the 6809.
You can't clock the 6809 at a low frequency because the registers need a dram refresh.
I wonder of the Hitachi one can?
30th Dec 2024!?
I love your drawing pad! Is that commercially available, or did you print your own pages and have it bound?
www.amazon.com/gp/product/B07SVTHR88
@@IMSAIGuy where did you get the LED module?
display HP 5082-7340, PCB my own design
@@IMSAIGuy where did you get the LEDs? Does the board have microprocessor or PLA?
I found it on eBay now and also the datasheet. Thanks