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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.
Memory20 MBConnectionFloppy drive port at500 kbit/s[1][2]Power consumption30 WWeight7 lbs (3.2 kg)Dimensions3.1 x 9.7 x 10.5 inches(7.9 x 25 x 27 cm)ImageWriteris aserial-baseddot matrix printerintroduced byApple Computerin late 1983.
The printer was essentially a re-packaged 9-pin dot matrix printer fromC. Itoh Electronics(model C. Itoh 8510, with a modified ROM and pinout), released the same year. It was introduced as a replacement for the earlierparallel-basedApple Dot Matrix Printer/DMP (also a C. Itoh model) and, while primarily intended for theApple II, worked across Apple's entire computer product line. The ImageWriter could produce images as well as text, up to a resolution of 144DPIand a speed of about 120CPS(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, theMacintosh 128K. Apple wanted a graphical printer for the Mac, and had introduced the ImageWriter primarily to support the new machine. This permitted it to produceWYSIWYGoutput from the screen of the computer, which was an important aspect for promoting the concept of theGUIand, later, desktop publishing. The ImageWriter could be supported byMicrosoft Windows-based PC's by using the included C. Itoh 8510 compatible driver.
TypeDot matrixSlotsnoneROM32 KBPortsSerialPower consumption180 WattColorNoDPI144Speed1-2 page per minuteWeight19 lbs.Dimensions(H × W × D) 4.8 × 16.2 × 11.8 inATI RAGE LT PRO XCLAIM 3D PLUS GRAPHICS ACCELERATOR 109-54100-00 MAC OS New Open
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