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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 ...
The logic board has four 30-pin SIMM slots; memory must be installed in pairs and must be 150 ns or faster. Video: The built-in 512 × 342 monochrome screen uses 21,888 bytes of main memory as video memory. Storage: The SE can accommodate either one or two floppy drives, or a floppy drive and a hard drive. After-market brackets were designed to ...
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 ...
Although this had always been planned from the beginning, Steve Jobs maintained if the user desired more RAM than the Mac 128 provided, he should simply pay extra money for a Mac 512 rather than upgrade the computer himself. When the Mac 512 was released, Apple rebranded the original model as "Macintosh 128k" and modified the motherboard to ...
The bridge card included the 68882 FPU to improve floating-point performance. The NuBus card was mounted horizontally above the motherboard. To cut costs, the IIsi's video shared the main system memory, which also had the effect of slowing down video considerably, especially as the IIsi had 1 MB of slow RAM soldered to the motherboard.
The $1,500 model had 2 MB of memory and a 40 MB hard disk. The Classic features several improvements over the Macintosh Plus , which it replaced as Apple's low-end Mac computer: it is up to 25 percent faster than the Plus, [ 1 ] about as fast as the SE, [ 5 ] and includes an Apple SuperDrive 3.5" floppy disk drive as standard. [ 19 ]
The Macintosh Plus was the last classic Mac to have an RJ11 port on the front of the unit for the keyboard, as well as the DE-9 connector for the mouse; models released after the Macintosh Plus would use ADB ports. The Mac Plus was the first Apple computer to utilize user-upgradable SIMM memory modules instead of single DIP DRAM chips. Four ...
The Macintosh Hard Disk 20 is the first hard drive developed by Apple Computer specifically for use with the Macintosh 512K. Introduced on September 17, 1985, it was part of Apple's solution toward completing the Macintosh Office (a suite of integrated business hardware & software) announced in January 1985.