Memory | 1 MB RAM, expandable to 4 MB (150 ns 30-pin SIMM) |
---|---|
Display | 9 in (23 cm) monochrome, 512 × 342 |
Graphics | 72 ppi |
Dimensions | Height: 13.6 in (35 cm) Width: 9.6 in (24 cm) Depth: 10.9 in (28 cm) |
Mass | 16.5 lb (7.5 kg) |
The Hard Disk 20 holds a whopping 20MB of data which is over 50 times the space of a 400K 3.5″ disk. It also introduced us to the Hierarchical File System (HFS). Start up from a floppy disk is required for the 512K, but with the 128K ROM, the 512Ke and Plus can boot directly from it.
Memory | 20 MB |
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Connection | Floppy drive port at 500 kbit/s[1][2] |
Power consumption | 30 W |
Weight | 7 lbs (3.2 kg) |
Dimensions | 3.1 x 9.7 x 10.5 inches (7.9 x 25 x 27 cm) |
ImageWriter is a serial-based dot matrix printer introduced by Apple Computer in late 1983.
The printer was essentially a re-packaged 9-pin dot matrix printer from C. Itoh Electronics (model C. Itoh 8510, with a modified ROM and pinout), released the same year. It was introduced as a replacement for the earlier parallel-based Apple Dot Matrix Printer/DMP (also a C. Itoh model) and, while primarily intended for the Apple II, worked across Apple's entire computer product line. The ImageWriter could produce images as well as text, up to a resolution of 144 DPI and a speed of about 120 CPS (characters per second). In text mode, the printer was logic-seeking, meaning it would print with the head moving in both directions while it would print only in one direction for graphics and Near Letter Quality. The ImageWriter was also supported by the original Macintosh computer, the Macintosh 128K. Apple wanted a graphical printer for the Mac, and had introduced the ImageWriter primarily to support the new machine. This permitted it to produce WYSIWYG output from the screen of the computer, which was an important aspect for promoting the concept of the GUI and, later, desktop publishing. The ImageWriter could be supported by Microsoft Windows-based PC's by using the included C. Itoh 8510 compatible driver.
Type | Dot matrix |
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Slots | none |
ROM | 32 KB |
Ports | Serial |
Power consumption | 180 Watt |
Color | No |
DPI | 144 |
Speed | 1-2 page per minute |
Weight | 19 lbs. |
Dimensions | (H × W × D) 4.8 × 16.2 × 11.8 in |