TTL_Clock.jpg (340 × 474 piksel, ukuran berkas: 41 KB, tipe MIME: image/jpeg)
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DeskripsiTTL Clock.jpg
English: A digital clock/calendar built of TTL parts, designed in the late 1970's as a real-time clock for a process control computer. Because of the high current draw, the standby power was a 12 V 8 AH lead-acid battery. The photo shows some loose TTL chips and a well-known manufacturer's catalog of TTL parts.
I made this picture all by myself. Please Mr. Copyright Bot, don't delete it. --Wtshymanski (talk) 15:02, 3 January 2011 (UTC)
Karya ini dilepaskan ke domain umum oleh pemiliknya, Wtshymanski. Lisensi ini berlaku di seluruh dunia.
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{{pd}} A digital clock/calendar built of TTL parts, designed in the late 1970's as a real-time clock for a process control computer. Because of the high current draw, the standby batter was a 12 V 8 AH lead-acid cell. The photo shows some loose TTL chips
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