Geschichte > 4. Computergeneration
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4. Computergeneration

Tandy TRS 80 Model 1 – Wikipedia

Der TRS-80 Modell 1 von Tandy Radio Shack gehörte neben dem Apple II und dem Commodore PET 2001 zu den ersten Heimcomputern, die in nennenswerten Stückzahlen als Fertigexemplare produziert wurden. Er kam 1977 auf den Markt

Radio Shack -TRS-80 Advertisement

Did you own one of these? The TRS-80 was introduced in 1977. It was one of the first home computers launched around the same time as the Apple II and Commodore PET. Tandy competitors nicknamed the mostly plastic computer the "Trash-80.” The TRS-80 was developed within the Radio Shack engineering group, based upon several processor chips, SC/MP, PACE, 8008, 8080 and finally the Z80. It used a black & white TV set, made by RCA. The earlier models used a basic called Basic Level 1 (Basic and the operating system fit in 4 KB ROM). I remember visiting the Radio Shack stores in the early days of PC's and spending time admiring the TRS-80. There were always one or two on display in the lobby.
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RWTH Aachen Vorkurs Informatik

Mit freundlicher Genehmigung Prof. C. Bischof 2003

Geschichte der Supercomputer

Bild: Mit freundlicher Genehmigung Dr. Gerhard Staude 2009
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Cray XMP-24 Mainframe

Cray XMP-24 Mainframe Serial Number 115 The predecessor of this machine, serial number 102, became operational at the National Security Agency in June, 1983. Serial number 102 was the first XMP delivered by Cray to a customer site, and thus was arguably the most powerful supercomputer in the world at that time. It was a Cray XMP22, containing two processors and two meagewords (16 Megabytes) of main memory. The machine consists of three towers: a CPU (central processing unit) and main memory tower, an IOS tower (Input/Output Subsystem) and a SSD tower (solid-state storage device, or extended memory. In July, 1987, as part of an upgrade, the original mainframe and IOS were replaced. CPU serial number 115 is a Cray XMP24, containing two processors and four meagawords (32 megabytes) of main memory. .... an overall performance rating of 420 Megaflops. The machine was retired in February, 1993. The mainframe weighs 5900 pounds. 250 kVA of 60 cycle power was consumed by this machine. Also see en.wikipedia.org/wiki/Cray_X-MP In comparison to modern CPU speeds, the X-MP had less than half of the raw power of Microsoft's Xbox console or less than 8% of an Intel Core 2 Duo E6700
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