I have a calculator with a built-in chess board. : r/mildlyinteresting
Saitek Calculator Chess is a calculator with an electronic chess computer hidden inside Full video: https://youtu.be/kHZHOptIFVk | By Daily Rad | Facebook
Chess on a TI-84 Calculator : r/chess, rating chess calculator - thirstymag.com
Saitek Model 118B Calculator Chess (1992) Electronic Travel Chess Computer
Ismenio's chess computer collection
Chess Move Calculator - Find the best next move - ChessMovePro