BUY ICL7107CPLZ https://www.utsource.net/itm/p/838061.html
3 1/2 Digit, LCD/LED Display, A/D Converters
The ICL7107CPLZ is a 3 1/2 digit A/D converter with LED display drivers. It is a 40-pin DIP package from IntelSil. Features: - Low power consumption - High accuracy - Low cost - Easy to use - On-chip clock Applications: - Digital voltmeters - Process control - Battery monitors - Data acquisition systems - Medical instruments (For reference only)