More about clock (249)

1-07-1976 | The pecularity of this rev . counter is that it responds to differences in luminous intensity. Consequently, if this circuit is to be...

1-12-1975 | In the last issue of Elektor various sound effects which could be added to electronic digital clocks were described, including a `tick`, a...

1-11-1975 | Any horologist who keeps a digital clock in the same room as conven- tional clocks cannot but feel sad to see it sitting there, mute a...

1-09-1975 | Elektor has previously published designs for `one-chip` digital clocks, with both mains and crystal reference frequencies. Whilst ICs such a...

1-09-1975 | The E1109 COSMOS IC contains all the functions necessary for a 12 or 24 hour clock. It incorporates an oscillator circuit requiring only an...

1-07-1975 | Digital clocks in which the timing pulses are derived from the 50 Hz mains fre- quency are very sensitive to mains inter- ference. An exc...

1-07-1975 | Programmable frequency dividers are particularly useful for producing a large number of frequencies from one reference frequency. An exa...

1-06-1975 | The mos-clock described in Elektor 1 has been extended with a crystal time base and an emergency supply. These extensions do make the clo...

1-12-1974 | The `brain` in the digital clock described in this article is the clock-IC MM5314, which needs only a few external components. The time of d...