Timer not invalidating
A dual-processor Honeywell 1750 system handled telemetry and various spacecraft functions.
Launched in January of 1994, the Clementine spacecraft spent two very successful months mapping the moon before leaving lunar orbit to head towards near-Earth asteroid Geographos.
Similarly, in the second problem wherein the user clicks the sign out button.
This month's (August) giveaway is a slightly-used (I tested it for a review) 300 MHz 4-channel (including 16 digital channels) SDS 2304X scope from Siglent that retails for about 00. A watchdog timer is an embedded system's last line of defense against firmware failures. Though the 1750 could control Clementine's thrusters, it did so only in emergency situations; all routine thruster operations were under ground control.
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