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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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Giddings & Lewis Processor Module PCB Assembly 501-03865-01 & 502-03061-02

$799.00 USD

Sale Sold out

ConditionSurplus - Untested MPN501-03865 Stock #0226-00524

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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This is a used Giddings & Lewis Electronics processor module PCB assembly bearing part numbers 501-03865-01 and 502-03061-02, silkscreened directly on the board face. The Giddings & Lewis brand logo is printed on the board. The board is a large-format, multi-layer through-hole assembly designed for use as a CPU processor module in a Giddings & Lewis CNC control system. Visible active ICs include a gold-lid Intel processor at IC-14, Intel 8284 clock generator, Intel 8288 bus controller, NEC D8259AC-2 programmable interrupt controller, MC2661PB and MC68661PB serial communications ICs, and Motorola MC68B50P. Logic ICs include SN75188N, AM26LS30PCB, AM26LS32PC-B, SN74LS00N, SN74LS04M, SN74LS640N, SN74LS245N, SN74LS240N, SN74LS373N, SN74LS138N, SN74LS273N, SN74LS244N, SN79LS32N, DM74LS174N, DM74LS244N, DM74LS160AN, DM74LS32H, and DM74LS20N among others. EPROMs and RAM ICs are present at multiple positions including 502-57554-00, 502-57555-00, 502-03333-01, and 502-03354-01. Board sections visible include TERMINATION SELECTION jumpers for TX, RTS, and DTR on channels A and B, ASYNC interface header J1, EXPANSION BUS connector CONN B, and gold-edge card connector P1. Test points and trimmer potentiometer V3-1 are accessible on the board. Physical condition shows signs of prior installation and use.

Stock # 0226-524

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.