The Votem, to play on James J. Carr’s book Digital Interfacing to an Analog World (Tab Books, Summit, PA. 1978), is an analog interface to Sinclair’s digital world. Analog/Digital Conversion Analog (related to analogous) refers to relationships by ratios. The analog device relates numbers to a turn on a wheel such as our rapidly disappearing
Using string statement to emulate READ/DATA by slicing the characters from the string which make up a data-set, converting the sliced substrings to a numerical value, if necessary, and then using these substrings as program variables.
Stringing along with the ZX81 Read More »
How would you like to have a computer with a color video display of fifteen colors, quality sound, high resolution, unlimited character sets, and a dual joystick interface? How would you like a system in which you do not have to worry about expansion? If you have a ZX81 (or ZX80 with the 8K ROM),
So You Wished You Had Bought a TS2000 Read More »
How to connect a TS1000 directly to a composite monitor.
Connect a Monitor to the TS1000 Read More »
Adapt an Atari joystick to emulate the arrow keys.
Adding A Joystick To The Timex-Sinclair 1000 Read More »
Listing of new user groups, books and other resources.
Resources (Sync v2 n4) Read More »
The Educational ZX80/1 Users 1 Group (EZUG) had a triple celebration in January. First, we were able to breathe a sigh of relief that we had survived a year of frenzied activity. Secondly, we welcomed the thousandth subscriber to our bimonthly newsletter. Thirdly, we launched our first educational ZX81 programs, fourteen of them in fact.
Teaching with the ZX81 Read More »
The computer can handle problems of this kind by making a series of successive approximations: try out any value of X, and see if it gives the Y you want; if it does not, then try another value of X.
Solving Implicit Functions on the ZX81 Read More »
