The Casio CQ-1 Computerized Quartz is a five-ounce computer the size of an eyeglass case that does the following:

—It is a digital clock that reads out the day of the week, the day of the month, and the exact time.

—It is a regular pocket calculator, —It can calculate hours and minutes with a time base of 60.

—It can tell you what day of the week it was anytime between January 1, 1901 and December 31, 2099.

—It has a built-in alarm buzzer with four programmable alarms.

The Casio CQ-1 Computerized Quartz sells for $39.95 in New York City. The list is around $55.

Lisa gave me mine for Valentine's Day and since then it has been my favorite new future toy. I haven't had as much fun or found a more useful piece of electronics since my first video tape recorder. After extensive use both traveling and at home, here are some thoughts on using it:

—First off, get one. You'll love it. Shop around the discount stores for the best price. Try to get the model that comes in grey-brown plastic rather than the ugly white plastic model.