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2. Macintosh 512K - Wikipedia

   en.wikipedia.org/wiki/Macintosh_512K

   Mac 512K back panel. The Macintosh 512K is a personal computer that was designed, manufactured and sold by Apple Computer from September 1984 to April 1986. It is the first update to the original Macintosh 128K. It was virtually identical to the previous Macintosh, differing primarily in the amount of built-in random-access memory. The ...

3. Macintosh 128K/512K technical details - Wikipedia

   en.wikipedia.org/wiki/Macintosh_128K/512K...

   Protected memory was only added to Macintosh computers with the release of the Mac OS X operating system. According to Andy Hertzfeld, the Macintosh used for the introduction demo on January 24, 1984, was a prototype with 512k RAM, even though the first model offered for sale implemented just 128k of non-expandable memory. This prototype was ...

4. Macintosh 512Ke - Wikipedia

   en.wikipedia.org/wiki/Macintosh_512Ke

   Because Apple's official upgrades were costly, many third-party manufacturers offered add-on SCSI cards, as well as RAM upgrades, to achieve the same functionality. The new ROM allowed the computer to run much newer system and application software; though it loaded more data into RAM, it only slightly decreased the amount of available memory ...

5. HP Pavilion dv9000 series - Wikipedia

   en.wikipedia.org/wiki/HP_Pavilion_dv9000_series

   First introduced in July 2006, [1] the HP Pavilion dv9000 series was a series of high-definition capable widescreen laptops using the HP Imprint finish. It featured 17.0" 16:10 LCD displays housed in a clamshell-type case, measured 15.16 x 11.65 x 1.57 inches, and weighs anywhere from about 7.7 lb (3.5 kg) to 8.4 lb (3.8 kg).

6. Comparison of Microsoft Windows versions - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_Microsoft...

   Microsoft Windows is the name of several families of computer software operating systems created by Microsoft.Microsoft first introduced an operating environment named Windows in November 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces (GUIs).

7. Comparison of operating systems - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_operating...

   Personal computer, media center Windows Microsoft: 1993 OS/2 and Windows 3.1x: Windows 11 (version 24H2) June 15, 2024: One time license fee Proprietary; Source-available: Workstation, personal computer, media center, Tablet PC, embedded system Windows Server (NT family) Microsoft: 1993 OS/2: Windows Server 2025 (version 10.0.26100.2605)