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A Macintosh Plus Also known as M0001A Manufacturer Product family Release date January 16, 1986; 32 years ago ( 1986-01-16) Introductory price US$2,599 (equivalent to $5,802 in 2017) Discontinued October 15, 1990 ( 1990-10-15) - (except 7.5.2) @ 8 MHz Memory 1 RAM (150 ns 30-pin SIMM), expandable to 4 MB Predecessor Successor The Macintosh Plus computer is the third model in the Macintosh line, introduced on January 16, 1986, two years after the and a little more than a year after the, with a price tag of US$2599. As an evolutionary improvement over the 512K, it shipped with 1 MB of RAM standard, expandable to 4 MB, and an external peripheral bus, among smaller improvements. It originally had the same generally beige-colored case as the (' 453' ), but in 1987, the case color was changed to the long-lived, warm gray 'Platinum' color. It is the earliest Macintosh model able to run OS. Contents. Overview of reported a rumor in December 1985: 'Supposedly, Apple will be releasing a Big Mac by the time this column sees print: said Mac will reportedly come with 1 megabyte of RAM. The new 128K-byte ROM.
And a double-sided (800K bytes) disk drive, all in the standard Mac box'. Introduced as the Macintosh Plus, it was the first model to include a port, which launched the popularity of external SCSI devices for Macs, including hard disks, tape drives, CD-ROM drives, printers, and even monitors. The SCSI implementation of the Plus was engineered shortly before the initial SCSI spec was finalized and, as such, is not 100% SCSI-compliant.
SCSI ports remained standard equipment for all Macs until the introduction of the in 1998, which replaced most of Apple's ' with. The Macintosh Plus was the last classic Mac to have a phone cord-like port on the front of the unit for the, as well as the connector for the; models released after the Macintosh Plus would use ports. The Mac Plus was the first Apple computer to utilize memory modules instead of single DRAM chips. Four slots were provided and the computer shipped with four 256k SIMMs for 1MB total. By replacing them with 1MB SIMMs, it was possible to have 4MB of RAM. Although 30-pin SIMMs could support up to 16MB total RAM, the motherboard had only 22 address lines connected for 4MB.
It has what was then a new 3 1⁄ 2-inch double-sided, offering double the capacity of for previous Macs, along with backward compatibility. The then-new drive is controlled by the same chip as in previous models, implementing.
The drive was still completely incompatible with drives. The 800 KB drive has two read/write heads, enabling it to simultaneously use both sides of the floppy disk and thereby double storage capacity.
Like the 400 KB drive before it, a companion was an available option. However, with the increased storage capacity combined with 2-4x the available RAM, the external drive was less of a necessity than it had been with the 128K and 512K. The Mac Plus has 128 KB of ROM on the motherboard, which is double the amount of ROM that's in previous Macs; the then-new System software and ROMs included routines to support SCSI, the then-new 800 KB floppy drive, and the (HFS), which uses a true directory structure on disks (as opposed to the earlier MFS, in which all files were stored in a single directory, with one level of pseudo-folders overlaid on them). For programmers, the fourth volume details how to use HFS and the rest of the Mac Plus's new system software. This new filing system allows it to use the first hard drive Apple developed for the 512K, the floppy disk-based and the then-new ROMs allow the Macintosh to use the drive as a startup disk for the first time. The Plus still did not include provision for an internal hard drive and it would be over nine months before Apple would offer a SCSI for the slow Hard Disk 20.
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It would be well over a year before Apple would offer the first internal hard disk drive in any Macintosh. A, the Plus has a 9-inch (23 cm) 512×342 monochrome display with a resolution of 72, identical to that of previous Macintosh models. Unlike earlier Macs, the Mac Plus's keyboard includes a numeric keypad and directional arrow keys and, as with previous Macs, it has a one-button mouse and no fan, making it extremely quiet in operation. The lack of a cooling fan in the Mac Plus led to frequent problems with overheating and hardware malfunctions. The applications and were bundled with the Mac Plus.
After August 1987, and were also bundled. Third-party software applications available included, and, as well as 's.
Microsoft Excel and PowerPoint (originally by ) were actually developed and released first for the Macintosh, and similarly Microsoft Word 1 for Macintosh was the first time a GUI version of that software was introduced on any personal computer platform. For a time, the exclusive availability of Excel and PageMaker on the Macintosh were noticeable drivers of sales for the platform.
The Apple Macintosh Plus at the in, The case design is essentially identical to the original. It debuted in beige and was labeled Macintosh Plus on the front, but Macintosh Plus 1 MB on the back, to denote the 1 MB RAM configuration with which it shipped. In January 1987 it transitioned to Apple's long-lived platinum-gray color with the rest of the Apple product line, and the keyboard's keycaps changed from brown to gray. In January 1988, with reduced RAM prices, Apple began shipping 2- and 4- MB configurations and rebranded it simply as ' Macintosh Plus.'
Among other design changes, it included the same trademarked inlaid Apple logo and recessed port icons as the and before it, but it essentially retained the original design. An upgrade kit was offered for the earlier and /, which includes a new motherboard, floppy disk drive and rear case. The owner retained the front case, monitor, and analog board.
Because of this, there is no 'Macintosh Plus' on the front of upgraded units, and the Apple logo is recessed and in the bottom left hand corner of the front case. However, the label on the back of the case reads 'Macintosh Plus 1MB'. The new extended Plus keyboard could also be purchased.
Unfortunately, this upgrade cost almost as much as a new machine. The Mac Plus itself can be upgraded further with the use of third-party accelerators. When these are clipped or soldered onto the 68000 processor, a 32 MHz 68030 processor can be used, and up to 16 MB RAM. This allows it to run. There is a program available called that can a Mac Plus on a variety of platforms, including, and even. Long production life.
The 'ED' at the end of the model name indicates that this Macintosh was sold to the educational market. Although the Mac Plus would become overshadowed by two new Macs (the and the ) in March 1987, it remained in production as a cheaper alternative until the introduction of the on October 15, 1990. This made the Macintosh Plus the longest-produced Macintosh ever having been on sale for 1,734 days, until the 2nd generation that was introduced on December 19, 2013 surpassed this record on September 18, 2018. It continued to be supported by versions of the up to, released in 1996. Additionally, during its period of general market relevance, it was heavily discounted like the 512K/512K e before it and offered to the educational market badged as the 'Macintosh Plus ED'.
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Due to its popularity, long life and its introduction of many features that would become mainstays of the Macintosh platform for years, the Plus was a common 'base model' for many software and hardware products. Problems The lack of fan could cause the life of a Macintosh Plus to end early for some users. As the power supply would heat up, joints inside it would fracture causing many problems, such as loss of in the monitor or a complete loss of power. As in most early compact Macs, the problem was common in the yoke connector, flyback transformer, and horizontal drive coupling capacitor. A fan was also often added to reduce heat when the machine was upgraded to its full RAM capacity of 4 MB. From the debut of the through the Macintosh Plus, various third-party cooling add-ons were available to help increase airflow through the unit. Reorganized the compact Macintosh case to accommodate a fan with the release of the, which optionally included a heat-generating internal hard disk.
ROM revisions The Plus went through two ROM revisions during its general market relevance. The initial ROM was replaced after the first two months as it had a serious bug which prevented the Mac from booting if an external SCSI device was powered off. The second revision fixed a problem with some SCSI devices that could send the Mac into an endless reset at post. Emulators.
Timeline of compact Macintosh models. Retrieved 2016-05-20. Retrieved 2016-05-20. Retrieved 2016-05-20. Webster, Bruce (December 1985). Retrieved 28 October 2013.
Knight, Dan. Retrieved 10 July 2015. Retrieved 2016-05-20. Retrieved 2016-05-20. Retrieved 2016-05-20. External links Wikimedia Commons has media related to.
Serial Box 2006 08 For Mac
at apple.com.