| Chess remains a very popular game, perhaps more so in eastern Europe than in the western world, although this seems to be changing, pr...
J. Heine (3)
| The chip card is a microcontroller or memory card with a full-blown processor structur, packaged in a plastic card. Thanks to modern semicon...
| In miniature circuits, the trend is away from expensive dry button cells and to NiCd button types. These batteries are easy to maintain:...