EVER been listening to a fascinating programme on the radio and wished you could rewind a bit, even though you weren’t recording it? Thanks to the falling price of high capacity memory chips, you now can.
A new breed of digital radios will let you rewind to the start of a programme, pause it, or get an instant replay of a short segment. And the same microchip-memory instant “rewind” facility is also coming to digital television receivers.
In all the new devices, microchip memory acts as a buffer. Sound (or vision) is continuously fed into the buffer memory and simultaneously…
