{"id":410,"date":"2021-02-04T14:40:11","date_gmt":"2021-02-04T14:40:11","guid":{"rendered":"https:\/\/www.ipocomputer.com\/lpc_en\/?page_id=410"},"modified":"2021-04-17T00:18:09","modified_gmt":"2021-04-17T00:18:09","slug":"introduction","status":"publish","type":"page","link":"https:\/\/retalhos.net\/ipocomputer\/introduction\/","title":{"rendered":"INTRODUCTION"},"content":{"rendered":"\r\n

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IPO HIPOTHETICAL COMPUTER
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A small historic<\/b><\/span>.<\/span><\/p>\r\n

(ESC – systems and computer company marketed the Siemens 4004 series computer in Brazil (see <\/span>http:\/\/www.wolfgangtroeger.de\/museum.htm<\/a><\/u><\/span><\/span> ).<\/span><\/p>\r\n

Was on a computer <\/span>Siemens 4004<\/a><\/u><\/span><\/span> With BS1000 operating system C\u00e9sar Luis Garrett developed the training program that now re-respects.
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The <\/span>RCA Spectra 70 da RCA Cumputers<\/a><\/u><\/span><\/span> It was the first commercially available computer that made use of integrated circuits designed in RCA Computers labs.
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Your user mode architecture is very similar to Sistemas IBM\/360<\/a><\/u><\/span><\/span>.<\/span>. The interrupt mechanism was different as the supervisor mode. Thus, the Spectra line used different IBM operating system, for example BS1000<\/p>\r\n

These systems were also marketed by English Electric (System 4) and Siemens, Siemens 4004. Siemens developed compatible processors and the BS \/ 1000 operating system. To see Project Unidata de 1972<\/a><\/u><\/span><\/span><\/p>\r\n

EVOLUTION YEARS 60\/70<\/span><\/span><\/span><\/p>\r\n

Before the advent of the video terminals, the communication of the man with the computer was made by the console – type typewriter.<\/p>\r\n

The card reader was the way used for the entry of the programs and data.<\/p>\r\n

The files on perforated cards were replaced by storage in magnetic tapes.<\/p>\r\n

With the advent of the tapes and magnetic disks, the operating systems – Tape Operation System and DOS – DISK OPERATION SYSTEM emerged.<\/p>\r\n

\"Punch
Punch Card, Printer 1200 LPM and 2 Card Readers<\/figcaption><\/figure>\r\n<\/blockquote>\r\n

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Recommended topic:History of Computing<\/a><\/u><\/span><\/span><\/strong><\/p>\r\n<\/blockquote>\r\n

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IBM\/360-65<\/span><\/a><\/u><\/span><\/span><\/strong><\/p>\r\n

\"Peripherals:
Peripherals: card reader, magnetic tape drives, magnetic discs.<\/figcaption><\/figure>\r\n
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Before the advent of video terminals, man-machine communication and man-man was made by console (type typewriter).<\/p>\r\n

The entry of the programs and data on cards was widely used, as well as the storage of the data on magnetic tape.<\/p>\r\n

With the advent of magnetic discs, the operating system TOS – Tape Operation System<\/a><\/u><\/span><\/span> It was replaced by the DISK OPERATION SYSTEM system.
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Fully compatible with the IBM \/ 360 system, used the BS1000 operating system.<\/strong><\/p>\r\n

The devices were built by the RCA, USA at IBM and Siemens, and sold or rented in Brazil by ESC – systems and computers. As the typical computers of the time, computers the 4004 series, depending on the model, had a member of 32, 64 or 128 kb, card reader, tape drive and magnetic disks.<\/p>\r\n<\/blockquote>\r\n

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Siemens 4004 – 4 magnetic disk units with capacity of 7.2 MB each disc<\/figcaption><\/figure>\r\n
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Left drive unit; Right printer 1200 Lin\/min<\/figcaption><\/figure>\r\n
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Typical computer system at the time of 4004 Series 35 (mainframe!) With 64 kb of memory, a removable disk drive can store 7.2 MB.<\/p>\r\n

The devices were built by the RCA, USA at IBM and Siemens, sold or rented here in Brazil by ESC – Systems and Computers Company, from Siemens AG.<\/p>\r\n<\/blockquote>\r\n

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Replica of Colossus<\/th>\r\nRCA 501 Transistorized Computer<\/th>\r\n<\/tr>\r\n