An Engineering Sample (ES) only CPU collector web site. This site features an extensive collection of engineering samples and prototypes (mainly x86 architecture).

Large CPU collection organized by manufacturer and class. This site features a variety of identification tools and forum.

A rather large collection of CPUs and other support chips. The site features a photo directory organized by manufacturer.

German collection of early to late model cpus with photos and specs. It also features an interactive forum.

Large CPU collector web site that features a searchable collection, from early vintage to more modern models, with photos, information, specs, and forum. Includes many non Intel CPUs (ex Motorola and Cyrix).

A German website featuring a collection of obsolete CPUs. Information about package and socket types. The collection can be viewed by manufacturer or family. It also features a shared forum with cpu-museum.de.

Calculators from the '70s, and famous home and personal computers from '80s. Photos, historic information and links to other resources.

Technical information about hardware, interfacing, and programming of this vintage device. Includes a construction project for a storage device to emulate the original FA-3 cassette interface.

A collection of early mechanical calculating machines and other calculating devices.

Technical information about many calculators, including chip pinouts and self-test sequences, and patent information.

Webring designed to allow navigation between similar sites dealing with the hobby of collecting, and history of electronic calculators.

The private collection of the Dutch collector Nico Baaijens of mechanical, electro-mechanical and electronic counting, adding and calculating machines. Many pictures and close-ups.

Fans of the 15C want Hewlett-Packard to put it back in production. Find a list of reasons to bring it back, the reason it was discontinued in the first place, and an online petition.

Serge Devidts' collection of vintage electronic calculators and some other pieces of old technology.

A collection of Sumlock Anita calculators and simulators, and related devices associated with the Sumlock factory in Portsmouth, U.K., in the 60s and 70s.

Bulletin board for collectors of old electronic calculators.

A collection of articles about the history of calculators, mechanical and electronic. Also, a number of on-line calculators, recommended books, and a vintage collectors forum.

A collector displays his small collection of old calculator models.

Information and lists of vintage and classic calculators, primarily Hewlett-Packard and Texas Instruments.

A celebration of old calculators showing the evolution from mechanical calculator to hand held electronic calculator.