{"product_id":"giddings-and-lewis-math-board-circuit-board-assembly-501-02988-00-502-02733-00-0226-558","title":"Giddings and Lewis Math Board Circuit Board Assembly 501-02988-00 \/ 502-02733-00","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Math Board circuit board assembly, part number 501-02988-00, schematic number 502-02733-00, manufactured by Giddings and Lewis Electronics. The board number A219002 is visible on the component side. This is a large-format single-sided PCB with metal card guide rails installed on both the top and bottom edges and gold-fingered edge connectors along the left and right sides for backplane installation into a compatible Giddings and Lewis CNC control rack. The board is densely populated with rows of 14-pin and 16-pin DIP integrated circuits in black ceramic and plastic packages, consistent with TTL and MSI logic families used in arithmetic processing applications. Yellow labeled ICs marked 185 are visible throughout, along with red disc capacitors used for bypassing. The board functions as a math co-processor or arithmetic logic unit within the Giddings and Lewis CNC machine tool control system, performing floating point or integer arithmetic operations in support of the main CNC processor. This product has been discontinued by the original manufacturer and is available as a surplus replacement. All components appear visually present with no visible signs of burning, cracking, or missing parts. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-558\u003c\/p\u003e","brand":"Giddings and Lewis","offers":[{"title":"Default Title","offer_id":48856952537328,"sku":"m00558","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/9821E98C-7511-4118-B0D6-AABAB1C2F0FC.jpg?v=1771632231","url":"https:\/\/mroexchange.com\/products\/giddings-and-lewis-math-board-circuit-board-assembly-501-02988-00-502-02733-00-0226-558","provider":"MRO Exchange","version":"1.0","type":"link"}