This part is a kind of semiconductor called ICL7107.

Function of this product has Digit A/D Converter.

Manufacturers : Maxim

Image and pinout :

Some of the text within the PDF file :

AVAILABLE ICL7106/7107 ICL7106/ICL7107 31⁄2 Digit A/D Converters General Description The Maxim ICL7106/ICL7107 are monolithic analog-todigital converters (ADCs). They have very high input impedances and require no external display drive circuitry. On-board active components include polarity and digit drivers, segment decoders, voltage reference and a clock circuit. The ICL7106 will directly drive a nonmultiplexed liquid crystal display (LCD), whereas the ICL7107 will directly drive a common anode light emitting diode (LED) display. Versatility and accuracy are inherent features of these converters. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input and reference are particularly useful when maki [ ... ]

ICL7107 PDF Datasheet Download