Fabricant inconnu

Expander 1

The Expander 1 two sets of audio ports for playback and recording, and two RS-232 ports on the back for connecting a printer and the Expander 2 Acoustic Modem. All in all, the Expander 1 is a useful little unit. Several VideoBrain programs made use of the Expander 1, including APL/S, Money Minder, Timeshare, and Information Manager. The unit interfaced with the VideoBrain via a plug in the back of the unit. It is unknown how many Expander 1 units were produced, but the two that have surfaced have incredibly low serial numbers (29 and 73!). It appears that the Expander 1 underwent a cosmetic change later in lifespan. Recently a unit with the serial number 868 appeared on ebay with a black front panel with slightly different text placement for the ports. It is now assumed that at least 1, 000 Expander 1 units were made, although very few have surfaced. Black Expander 1 pic 1 Black Expander 1 pic 2 Specifications CPU: 3870 single chip microprocessor Memory: 2K ROM Return to VideoBrain Hardware