| The programmable timer/con-troller, described elsewhere in this issue, is not really complete. It cannot be used to switch aquarium lighting...
| The programmable timer/con-troller, described elsewhere in this issue, is not really complete. It cannot be used to switch aquarium lighting...
| The circuit diagram of the `random tune` doorbell is shown in figure 1. As can be seen, it basically consists of two squarewave generators,...
| Having dealt with reverberation and echo in a previous article (see Elektor 46, February 1979) we now take a look at how delay lines can be...
| The ASCII keyboard (Elektor, November 1978) is more versatile than may appear at first sight. Some readers have com-mented that a `shift-loc...
| The specifications for a serial interface between computer and terminal are given by the so-called RS232C and V 24 standards -among others....
| Determining the frequency response of an amplifier normally requires a series of carefully conducted test measurements, a large supply of gr...
| We have, somewhere in the Elektor laboratories, a sound effects department, although the exact location has yet to be discovered. There was...
| It seems safe to assume that the `BASIC microcomputer` is the cheapest home-construction computer ever described that can be programmed usin...
| A BASIC interpreter for the SC/MP has been available for some time. However, this can only be used in systems where page 0 is available for...
| While on the subject of doorbells (see Random Tune Doorbell, elsewhere in this issue), an alternative gimmick is worth considering. The circ...