I wish I saw this Fourier Transform when I was in high school
The Philco Transac models S-1000 scientific computer and S-2000 electronic data processing computer, were the first commercially produced large-scale all transistor computers, introduced in 1957. It used discrete surface barrier transistors instead of vacuum tubes (as the integrated circuit had not yet been invented). It incorporated a speed up technique for asynchronous adders reducing the time for additive carry-overs to propagate.
🏢 Microsoft adress(es)
When you think of Microsoft's headquarters location, Redmond WA came in mind, but it actually begin in Albuquerque, NM and later moved to Bellevue, southwest of Redmond, as you can see in this old ad. The ad is also interesting because show Microsoft selling hardware accessories (RAM cards) and software (FORTRAN, COBOL) FOR Apple computers running CP/M OS (before the introduction of the IBM PC of course)
Site about the technical details of the hacker activities of Kevin Mitnick, in particular his Christmas 1994 break-in to Tsutomu Shimomura's computers in San Diego, California, his pursuit by police, US Marshalls and the FBI; his capture in Raleigh, North Carolina, on February 15th, 1995, and posterior conviction. Is base on the book of the same name.
Wikipedia page: https://en.wikipedia.org/wiki/Kevin_Mitnick
The Vacuum tube (left), late-1940s and early-1950s, the Transistor (middle) late-1950s and early-1960s, and the Chip Transistor (the little dot at right). At first transistors, whose wire connector legs made them look like spiders, were wired with other components on circuit cards to form logic and control elements of processors. With the IBM System/360 in 1964, circuits were closely combined on half-inch ceramic modules. The microelectronics era had begun.
The IBM 3660 supermarket system was a family of data processing products designed to perform normal checkout operations and to meet the data collection and dissemination needs of the supermarket industry. Announced on 10/11/1973, the system featured the IBM 3651 Model 60 store control unit containing the storage and logic required to supervise the IBM 3663 checkout terminals and IBM 3666 checkout scanners that read Universal Product Code Symbol-marked items.
Ah ... the Slide Rule ("slipstick", is US slang). Is a mechanical analog computer ... used primarily for multiplication, division, and functions such as roots, logarithms and trigonometry, but not normally used for addition or subtraction. [https://en.wikipedia.org/wiki/Slide_rule].
Its demise was the introduction of the pocket-sized scientific calculators, in particular the Texas Instrument TI-30 in 1976 (the HP-35 launched in 1972 was to expensive for undergraduate students)
Univac removable disc cartridge
Univac 9000 Series Disk Prototype, 2.2 MB of capacity. J. Presper Eckert describes it in his speech "Industry Science & Technology in Last Third of the Century, 1966" as "A small removable disc cartridge shown..."
And to think that some people hated the 3.5-inch 1.44 MB floppy disk ("diskette") because was too big for so small storage...
On September 9, 1947, engineers working on the Mark II computer at Harvard University found a moth stuck in one of the components. They taped the insect in their logbook and computer scientist Grace Hopper reported the "First actual case of bug being found,". The engineers who found the moth were the first to literally "debug" a machine.
The words "bug" and "debug" soon became a standard part of the language of computer programmers.
Landed! in #retrocomputing. Hello world!
Computer History Timeline for Students, Children & Kids
Major historical events are arranged in the Computer History Timeline by chronological, or date order, providing an actual sequence of these past events which were of significance to history.
Hoping to somehow repeat what was done in the Computer History Community in G+, that this will be a place to participate and post. comment, discuss and share about computing, computers, information technology and all things related, looking at the past to make sense of the present and try to understand the future.
Anybody with interest on computer history can participate, lets do #computerhistory
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko