From: Davison, Lee (Lee.Davison_at_merlincommunications.com)
Date: 2004-05-01 00:41:02
> At work, we need two 16-bit (binary) counters which can count up > and down, depending on the state of a direction bit 74LS191 4 bit binary up/down counters. These can be cascaded to form counters of any length and with the carry/borrow enable scheme avoid the ripple effect seen in other long counter chains. These were commonly used to address the up/down scrolling background in arcade machines in the 80s. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ Message was sent through the cbm-hackers mailing list
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