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Audio and Video Talk
Reel-to-Reel & Cassette Tapes
Flat faced Revox B77 conversion
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<blockquote data-quote="Den123" data-source="post: 993911" data-attributes="member: 13454"><p>I see RS have some variants.</p><p>The "B's" and "C's" are the 59:59 specials. The others are decade devices.</p><p>Common anode, common cathode, one can drive more display current than the other.</p><p>Take note, some of the pins are tri-state (0/2.5/5.0V). Very interesting chips. I had a lot of fun with them (thumbwheel presets in those days). Leading zero blanking, all sorts of difficult to do features built in.</p></blockquote><p></p>
[QUOTE="Den123, post: 993911, member: 13454"] I see RS have some variants. The "B's" and "C's" are the 59:59 specials. The others are decade devices. Common anode, common cathode, one can drive more display current than the other. Take note, some of the pins are tri-state (0/2.5/5.0V). Very interesting chips. I had a lot of fun with them (thumbwheel presets in those days). Leading zero blanking, all sorts of difficult to do features built in. [/QUOTE]
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Audio and Video Talk
Reel-to-Reel & Cassette Tapes
Flat faced Revox B77 conversion
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