New PDF release: A+ Book

ISBN-10: 1893596990

ISBN-13: 9781893596993

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45 A+ Training & Test Preparation Guide Microsoft begins work on a graphical user interface for MS-DOS. It was called Interface Manager, because it would effectively hide the interface between programs and devices like printers and video cards. This marked the beginning of Windows. 1982 Intel completes development of the 80286 processor—a 16-bit data bus, with 134,000 transistors. It could address 16 MB of memory. You could purchase them for $350 (in quantities of 100 or more). 1 now supports double-sided disks that hold 360 kilobytes of data.

It boasts 2000 transistors with a clock speed of up to 1 MHz (megahertz). 1972 The first 8-bit microprocessor—the 8008—is released. It runs at 200 KHz and can access up to 16 KB of memory. 1974 The 8080 microprocessor is developed. This improved version of the 8008 became the standard from which future processors were designed. 1975 Digital Research introduces CP/M—an operating system for the 8080. The combination of software and hardware becomes the basis for the standard computer. Bill Gates and Paul Allen license their newly written BASIC to MITS.

The following table provides an overview of the evolution of modern computers—it is a timeline of important events. As you read this timeline for the first time, you will no doubt encounter unfamiliar terminology. For now, don’t worry about it; just experience the history of computers. Also, keep in mind that the timeline you are about to read does not include everything about the history of computers and the computer industry. After completing this course, you should come back and read this timeline again.

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A+ Book


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