About Us
Located in Hunt Valley, Maryland, the System Source Computer Museum offers an unusually hands-on look at computing history, with thousands of artifacts that connect early calculating tools, landmark computers, supercomputers, and personal technology. Also known as the Computer Museum @ System Source and legally as the Maryland Technology Museum, Inc., it is a standout destination for tech enthusiasts, historians, families, and anyone interested in how computing evolved.
Founded from obsolete 1980s ComputerLand inventory by Bob Roswell and Maury Weinstein, the museum reflects a longstanding commitment to preserving and restoring computing history. Bob and knowledgeable docents and volunteers lead tours, sharing stories and insights that give the exhibits useful historical context. Guided tours are often described as educational, nostalgic, and inspiring.
The museum houses over 9,000 artifacts spanning from ancient calculating tools like abacuses, Napier’s Bones, Quipu, slide rules, and an Antikythera mechanism replica to modern-era computers, supercomputers, and gaming consoles. Many items are operational or restored, allowing visitors to experience restored computing history firsthand.
The collection is easiest to understand through several major exhibit areas:
· Early Mechanical & Electric Calculators: Dalton, Curta, Monroe, and Early IBM Electronic Tabulating Machines.
· Rare early computers: Authentic Apple I, Xerox Alto, Kenbak-1, and early Apple systems, including the Apple II, Apple III, and Lisa.
· Mainframes and supercomputers: Cray-1, Cray-2 Prototype, Cray T90, UNIVAC systems, IBM System/360s, DEC PDP systems, LINC, and a restored Bendix G-15.
· Minicomputers, memory, and storage: Burroughs, Data General, and HP systems, along with core memory, delay-line memory, tapes, floppies, large hard drives, and mechanical or electromechanical calculators.
· Gaming and personal computing: A broad range of consoles and home computers from the 1970s through the 1990s




