Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Mostek
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
==Early Products== [[File:MK6010.jpg|thumb|World's 1st Single-Chip Calculator]] Mostek's first contract was from [[Burroughs Corporation|Burroughs]], a $400 contract for circuit design. Initially Mostek products were manufactured in [[Worcester, Massachusetts]] in cooperation with [[Sprague Electric]], however by 1974 most of its manufacturing was done at their headquarters in [[Carrollton, Texas]]. The first design to be produced was the MK1001, a simple [[barrel shifter]] chip made using an aluminium-gate [[PMOS logic|PMOS]] process. This was followed by a 1K [[DRAM]], the MK4006, designed by Vern McKinney, that was manufactured in their Carrollton facility. Mostek had been working with [[Sprague Electric]] to develop the [[ion implantation]] process<ref>{{cite journal|access-date=2024-02-16 |date=2010-06-09 |title=From nuclear physics to semiconductor manufacturing: the making of ion implantation |publisher=tandfonline.com |doi=10.1080/07341510903083211 |url=https://www.tandfonline.com/doi/abs/10.1080/07341510903083211 |last1=Lécuyer |first1=Christophe |last2=Brock |first2=David C. |journal=History and Technology |volume=25 |issue=3 |pages=193–217 |url-access=subscription }}</ref> which provided much better control of doping profiles, especially in lowering enhancement-mode transistor threshold voltage and providing depletion-load transistors. Using ion implantation, Mostek became an early leader in MOS manufacturing technology, while their competition was still mostly using the older bipolar technology. The resulting increased speed and lower cost of the MK4006 memory chip made it the runaway favorite to IBM and other [[Mainframe computer|mainframe]] and [[minicomputer]] manufacturers (cf. [[BUNCH]], [[Digital Equipment Corporation]]). In 1970 [[Busicom]], a Japanese [[adding machine]] manufacturer, approached [[Intel]] and Mostek with a proposal to introduce a new electronic calculator line. Intel responded first, providing them with the [[Intel 4004]], which they used in a line of desktop calculators. Mostek's device took longer to develop but was the world's first '''single chip calculator''', the MK6010, used for the Busicom LE-120A which went on the market in 1971 and was the smallest calculator available for some time.<ref name ="Popular Science Jun 1971">{{cite magazine | last = Free | first = John R. | title = Microelectronics Shrinks the Calculator |magazine= Popular Science | volume = 198 | issue =6 | pages =74–76, 111 | date = June 1971 | url = https://books.google.com/books?id=sgAAAAAAMBAJ&pg=PA111 | quote = One 40-lead ceramic package will replace 22 MSI circuits now used in Busicom Junior model. Mostek/Nippon-developed chip is about 0.18 inch on a side, with 2,100 transistors. }}</ref> [[Hewlett-Packard]] also contracted with Mostek for design and production of chips for their [[HP-35]] and [[HP-45]] calculators.<ref>{{cite web|access-date=2024-02-16 |date= |title=Hewlett Packard Model 46 Electronic Calculator |publisher=oldcalculatormuseum.com |url=https://www.oldcalculatormuseum.com/hp46.html}}</ref>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)