Add a Clock/Calendar To Your PCjr By Colin Tuttle If you are tired of typing in the date and time every time you boot up, Integrity Technology of Milpatas, California, has a product which will do that automatically for you. The item is the PCjr Clock Cartridge, and plugs into one of the front cartridge slots on the PCjr. The cartridge contains a five year, 3 volt Lithium battery, to keep track of the time and date when the computer is turned off. Once it is plugged in, it will always remember the date, functioning similar to the way in which your BASIC cartridge operates. The cartridge automatically considers months with less than 31 days, and takes into account leap years. Accuracy is within one minute per month. It comes with the required disk software for installation, and is available for $34.50 each, with a quantity discount available. For more information on the ROM Clock cartridge, contact Integrity Technology at 105 Serra Way, Suite 230, Milpitas, California 95035, Phone (408) 262-8640.