Hi gurus,
I'm designing a special timer that should buzz depending on its' current operating mode and the displayed time.
The circuit is planned to function on 'pure' electronics - I mean, without Arduino.
555 timer is used as pulse generator and a bunch of TTL ICs are used (counters,multiplexers,decoders,AND/NOR/NOT gates...)
The buzzer should sound when:
11 digits/bits are all LOW(0) and [4 other bits at one of 4 specific combinations]
To program this logic, I can use logic gates (that I currently have) - but it will add more 7 ICs [14 pins each - 'quad 2-input' NOR & AND gates].
The circuit already contains 15 ICs, so I'm not so excited adding 7 more just for the buzzer '1'.
Need your opinion/advice on the following:
1. Would it be better to use for the buzzer logic an EEPROM IC ?
For example: 28C16 EEPROM 16K (2Kx8) - 11 Address/8outputs [datasheet]
it would take less space on a board and is much simpler to wire.
2. what approach would you choose/advice for the buzzer logic ?
maybe other alternatives also exist that I'm not aware of
Appreciate your help !
I'm designing a special timer that should buzz depending on its' current operating mode and the displayed time.
The circuit is planned to function on 'pure' electronics - I mean, without Arduino.
555 timer is used as pulse generator and a bunch of TTL ICs are used (counters,multiplexers,decoders,AND/NOR/NOT gates...)
The buzzer should sound when:
11 digits/bits are all LOW(0) and [4 other bits at one of 4 specific combinations]
To program this logic, I can use logic gates (that I currently have) - but it will add more 7 ICs [14 pins each - 'quad 2-input' NOR & AND gates].
The circuit already contains 15 ICs, so I'm not so excited adding 7 more just for the buzzer '1'.
Need your opinion/advice on the following:
1. Would it be better to use for the buzzer logic an EEPROM IC ?
For example: 28C16 EEPROM 16K (2Kx8) - 11 Address/8outputs [datasheet]
it would take less space on a board and is much simpler to wire.
2. what approach would you choose/advice for the buzzer logic ?
maybe other alternatives also exist that I'm not aware of
Appreciate your help !