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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 increased memory turned the ...
An Apple M1 processor. The M1 is a system on a chip fabricated by TSMC on the 5 nm process and contains 16 billion transistors. Its CPU cores are the first to be used in a Mac processor designed by Apple and the first to use the ARM instruction set architecture. It has 8 CPU cores (4 performance and 4 efficiency), up to 8 GPU cores, and a 16 ...
The Macintosh Processor Upgrade Card can bring a 68k Mac, that can normally only go up to Mac OS 8.1, to be upgraded to Mac OS 8.6 or newer as long as the card is always in use. If the user turns off or disconnect the card, the machine will display a Sad Mac as newer versions of Mac OS aren't compatible with 68k processors.
The iMac does not officially have an expansion slot, but early versions include a "mezzanine slot" intended for internal use but which a few third parties produced expansion cards for, such as video card upgrades and SCSI ports. [33] Early models have an IrDA infrared port that wirelessly connects personal digital assistants and other devices. [31]
As part of the Mac transition to Apple's own processors, the Intel-based iMac was succeeded by the Apple silicon iMac beginning in 2021. Apple discontinued the 21.5-inch Intel iMacs the same year, with the 27-inch model discontinued in March 2022, following the announcement of the Mac Studio and 27-inch Apple Studio Display .
The All-In-One can be modified to use a PCI video card with the internal monitor. [30] Personality cards: Some users have upgraded the Whisper personality card with a "Wings" Personality card (which is plugged into the same PERCH slot), and some have upgraded the ROM to a newer version (Revision A boards to Revision B or Revision C boards).
The Apple 80-Column Text Card is an expansion card for the Apple IIe computer to give it the option of displaying 80 columns of text instead of 40 columns. Two models were available; the cheaper 80-column card has just enough extra RAM to double the video memory capacity, and the Extended 80-Column Text Card has an additional 64 kilobytes of RAM, bringing the computer's total RAM to 128 KB.
Apple's System 7 Tune-up addon added a "minimum" memory size and a "preferred" size—if the preferred amount of memory was not available, the program could launch in the minimum space, possibly with reduced functionality. This was incorporated into the standard OS starting with System 7.1, but still did not address the root problem. [8]
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