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Dk'tronics Real Time Clock

No change in size, 15:06, 12 January 2010
/* I/O Ports */
The RTC chip is a HD146818 (which is also used in IBM PCs).
== I/O Ports Technical ==
Contains a HD146818P (RTC), a TMP[[Z80 PIO|Z84C20]]P ([[Z80 PIO]]), three logic chips, and a 3.6V battery.
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