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About Timer IC 555
The 555 is an industrial standard timer IC, this app calculates about it.
The 555 is an industrial standard timer IC, this app calculates about it.
FEATURES
- Can limit the values of resistors/capacitor to E3/E6/E12/E24 series.
- Simple waveform which will be output.
- Calculating the frequency and duty cycle from resistors/capacitor.
- Reverse calculating the values of resistors/capacitor from frequency and duty cycle. And list up recommended parts.
- Supported operation is only Astable.
HOW TO USE #1
(1) Please input the values of resistor Ra, Rb and capacitor C.
(2) A frequency, duty cycle, and waveform are output.
HOW TO USE #2
(1) Please input the frequency and duty cycle.
(2) A list of recommended parts (resistor Ra, Rb and capacitor C) is output.
(3) Can use one of the list as the input of 'HOW TO USE #1', and can calcurate it again.
What's new in the latest 2.5
Last updated on 2025-08-11
v2.5
- Added an option which sounds a result square wave.
- Updated the target API level to Android 15 by Google order.
- Fixed a bug that the previous wave is restored when rotated the screen.
- Added an option which sounds a result square wave.
- Updated the target API level to Android 15 by Google order.
- Fixed a bug that the previous wave is restored when rotated the screen.
Timer IC 555 APK Information
Old Versions of Timer IC 555
Timer IC 555 2.5
Aug 11, 20252.1 MB
Timer IC 555 2.4
Mar 22, 20252.1 MB
Timer IC 555 2.3
May 13, 20242.1 MB
Timer IC 555 1.1
Jul 19, 20171.3 MB
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