Feeds

Intel's 4004 microprocessor calc code brought back to life

As the flowchart turns

Security for virtualized datacentres

From the sweet as a nut files: we've come across a web site that has recreated the original software that ran on Intel's first commercial microprocessor - the 4004, released in 1971.

The story of the 4004's creation is the stuff of legend, and most semiconductor veterans will know the tale. For those who don't, here's a brief recap.

Japanese firm Busicom knocked on a fledgling Intel's door, asking for help creating a series of chips that could power a new line of calculators. Intel's engineers started cranking away on the project but found that creating lots of specialized chips proved too complex and costly. So, Federico Faggin, Ted Hoff, Stan Mazor and Busicom's Masatoshi Shima teamed to craft a more general purpose chip that could be programmed to handle a variety of jobs such as display and printer control.

With what would become the 4004 in hand, Intel talked Busicom into returning the rights to the design as a swap for refunding some development costs and giving Busicom a price cut on the chips.

This let Intel sell its chip - the first commercial microprocessor - to others.

A number of customers experimented with the 4004 and its follow-on, but it was the third generation 8080 put out in 1975 that really kicked Intel's microprocessor biz into overdrive. That chip made its way into hobby computer kits such as the Altair 8800.

(Those interested in more detail on this tale are urged to grab my book on Silicon Valley history or Leslie Berlin's beyond outstanding biography on Intel co-founder Bob Noyce.)

Now you can replicate some of the 4004 magic via a new simulator of the Busicom 141-PF calculator and copy of the code. In addition, you'll find an existing simulator of the actual microprocessor.

There's more on the 4004 at the Intel Museum in Santa Clara. The little museum is located at the front of Intel's headquarters. It's actually quite impressive for a small museum, teaching you a lot about Intel and the chip making process in a few, digestible exhibits. You even find out why the brilliant Noyce almost failed to graduate from college because of a pig. ®

Register editor Ashlee Vance has just pumped out a new book that's a guide to Silicon Valley. The book starts with the electronics pioneers present in the Bay Area in the early 20th century and marches up to today's heavies. Want to know where Gordon Moore eats Chinese food, how unions affected the rise of microprocessors or how Fairchild Semiconductor got its start? This is the book for you - available at Amazon US here or in the UK here.

New hybrid storage solutions

More from The Register

next story
Apple iPhone 6: Missing sapphire glass screen FAIL explained
They just cannae do it in time, says analyst
Slap my Imp up: Bullfrog's Dungeon Keeper
Monsters need to earn a living too
Oh noes, fanbois! iPhone 6 Plus shipments 'DELAYED' in the UK
Is EMBIGGENED Apple mobile REALLY that popular?
Apple's big bang: iPhone 6, ANOTHER iPhone 6 Plus and WATCH OUT
Let's >sigh< see what Cupertino has been up to for the past year
Apple Pay is a tidy payday for Apple with 0.15% cut, sources say
Cupertino slurps 15 cents from every $100 purchase
The Apple Watch and CROTCH RUBBING. How are they related?
Plus: 'NostrilTime' wristjob vid action
Apple's SNEAKY plan: COPY ANDROID. Hello iPhone 6, Watch
Sizes, prices and all – but not for the wrist-o-puter
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Top 5 reasons to deploy VMware with Tegile
Data demand and the rise of virtualization is challenging IT teams to deliver storage performance, scalability and capacity that can keep up, while maximizing efficiency.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.