| X86-Secret : ES Zone An Engineering Sample (ES) only CPU collector web site. This site features an extensive collection of engineering samples and prototypes (mainly x86 architecture). | |
| CPU-World.com Large CPU collection organized by manufacturer and class. This site features a variety of identification tools and forum. | |
| CPUShack.net A rather large collection of CPUs and other support chips. The site features a photo directory organized by manufacturer. | |
| CPU-Museum.de German collection of early to late model cpus with photos and specs. It also features an interactive forum. | |
| CPU-Collector.com 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). | |
| CPU-Collection.de 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. | |
| Collection of Calculators, Portable Computers and Vintage Electronics Calculators from the '70s, and famous home and personal computers from '80s. Photos, historic information and links to other resources. | |
| Casio FX-700P Programmable Calculator 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. | |
| Calculator's Pages A collection of early mechanical calculating machines and other calculating devices. | |
| Calculator Technical Information Technical information about many calculators, including chip pinouts and self-test sequences, and patent information. | |
| Calculator Collecting Webring designed to allow navigation between similar sites dealing with the hobby of collecting, and history of electronic calculators. | |
| Calculating Machines 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. | |
| Bring Back the HP 15C 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. | |
| Be Calc Serge Devidts' collection of vintage electronic calculators and some other pieces of old technology. | |
| Anita Calculator Simulators 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. | |
| Yahoo! Groups : oldcalcs Bulletin board for collectors of old electronic calculators. | |
| The X-Number World of 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. | |
| Vintage calculators A collector displays his small collection of old calculator models. | |
| Vintage Calculators Information and lists of vintage and classic calculators, primarily Hewlett-Packard and Texas Instruments. | |
| Vintage Calculators A celebration of old calculators showing the evolution from mechanical calculator to hand held electronic calculator. | |