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Much of the research in this field seeks to improve the human–computer interaction by improving the usability of computer interfaces. [8] How usability is to be precisely understood, how it relates to other social and cultural values, and when it is, and when it may not be a desirable property of computer interfaces is increasingly debated.
The PC-8801's direct successor, the PC-8801mkII, came with a JIS level 1 kanji font ROM, a smaller case and keyboard, and, in the models 20 and 30, one or two internal 5 1 ⁄ 4-inch 2D floppy disk drives. This set of PC-8800 computers sold more units than the PC-9800 series at that time.
PC-1 programs would work unmodified on the PC-3 and on the PC-8 with changes for screen size, and PC-4 (26-3650B) programs would run unmodified on the PC-5, PC-6 and PC-7. The PC-2 was a unique architecture and was the only unit in the line allowing direct memory access with POKE, PEEK and CALL.
Windows 8.1 is a release of the Windows NT operating system developed by Microsoft.It was released to manufacturing on August 27, 2013, and broadly released for retail sale on October 17, 2013, about a year after the retail release of its predecessor, and succeeded by Windows 10 on July 29, 2015.
The standard floppy drive was upgraded to a 1.2 MB 5 + 1 ⁄ 4 inch floppy disk drive (15 sectors of 512 bytes, 80 tracks, two sides), which stored over three times as much data as the 360 KB PC floppy disk, but had compatibility problems with 360k disks (see Problems below). 3 + 1 ⁄ 2 inch floppy drives became available in later ATs ...
A human computer, with microscope and calculator, 1952. It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [] read the truest computer of Times, and the best ...
The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals.
Original floppy disk drives for the PC-8001 are the dual-unit PC-8031 and the additional dual-unit PC-8032, which use 143 KB single-sided 5.25-inch format. They were followed by the single-unit PC-8031-1V, the dual-sided PC-8031-2W and PC-8032-2W. These units are attached to the PC-8001 through the PC-8011 or the PC-8033 adapter.