Cited as a reference · for beginners
RAM module build - part 1
Why people recommend it
Ben Eater builds the 74LS189 RAM module for his 8-bit computer; often cited in questions about the chip heating and LEDs driven without resistors.
Watch for: LEDs driven without current-limiting resistors
In their words
If you search over internet using query "74LS189AN heating", there's a video by Ben Eater exactly on the subject, with people comments (expand the replies on that page to see them):
Anonymous on electronics.stackexchange.com, Jan 2018. CC BY-SA.
On his video here: [video] You can see that he has 8 LED's off of the 74LS04's - to indicate / watch the data being passed on the lines.
Kevin Hill on electronics.stackexchange.com, Apr 2017. CC BY-SA.
I have seen this video [video] where he is able to light-up the LED when data word is a high bit and Vol and Iol are similar for both 7489 and 74189.
Peace on electronics.stackexchange.com, Feb 2018. CC BY-SA.
