Same As:
Package Name:com.algsoftlab.timer555
SHA-256:a61b4bed2564b9dea0b60cd212cbdace8d8acb7a29aed23ab7fdc74a62e5140c
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Feb 28, 2026
Practical Oscillator Circuits Using 555 Timers, Logic ICs, and Op-Amps. Download and install old versions of 555 Timer & Oscillators Guide that suits your device model and enjoy your favorite features!
We’ve expanded our content with 3 new languages!
The app is now available in 14 languages:
• English,
• French,
• German,
• Indonesian,
• Italian,
• Japanese,
• Polish,
• Portuguese,
• Russian,
• Simplified Chinese,
• Spanish,
• Turkish,
• Ukrainian,
• Vietnamese
— making it more accessible than ever.
555 Timer & Oscillators Guide old version 3.2 was released on Feb 28, 2026 by ALG Software Lab. The app download size is 14.3 MB. We recommend you download the latest version of 555 Timer & Oscillators Guide for the new features and better performance.
Download the Latest VersionCheck out the detailed comparison between the latest and old version of 555 Timer & Oscillators Guide, including the file size and Android system requirements.
| Version 3.2 | Version 3.3 (Latest) | |
|---|---|---|
| Package Name | com.algsoftlab.timer555 | com.algsoftlab.timer555 |
| Version | 3.2 | 3.3 |
| Update Date | Feb 28, 2026 | Jul 2, 2026 |
| Size | 14.3 MB | 12.8 MB |
| Requires Android | Android 7.0+ (N, API 24) | |
| Architecture | armeabi-v7a | arm64-v8a |
| Signature | 63c97b9d1f6e1a0b694778d1998d4137acff853b | 63c97b9d1f6e1a0b694778d1998d4137acff853b |
| Google Play App License | Required | Required |
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