Vector graphics

Vector graphics is the use of polygons to represent images in computer graphics. Vector graphics are based on vectors, which lead through locations called control points or nodes. Each of these points has a definite position on the x and y axes of the work plane and determines the direction of the path; further, each path may be assigned a stroke color, shape, curve, thickness, and fill.

Overview

One of the first uses of vector graphic displays was the US SAGE air defense system. Vector graphics systems were only retired from U.S. en route air traffic control in 1999, and are likely still in use in military and specialised systems. Vector graphics were also used on the TX-2 at the MIT Lincoln Laboratory by computer graphics pioneer Ivan Sutherland to run his program Sketchpad in 1963.

Subsequent vector graphics systems, most of which iterated through dynamically modifiable stored lists of drawing instructions, include the IBM 2250, Imlac PDS-1, and DEC GT40. There was a home gaming system that used vector graphics called Vectrex as well as various arcade games like Asteroids, Space Wars and many cinematronics titles such as Rip-Off, and Tail Gunner using vector monitors. Storage scope displays, such as the Tektronix 4014, could display vector images but not modify them without first erasing the display.

Vector Graphic

Vector Graphic was an early microcomputer company founded in 1976, the same year as Apple Computer, during the pre-IBM PC era, along with the NorthStar Horizon, IMSAI, and MITS Altair.

The first product was a memory card for the S-100 bus. A full microcomputer using the Z80 microprocessor, the Vector 1, was introduced in 1977. There were several Vector Graphic models produced. The Vector 1+ had a floppy disk drive. The Vector Graphic 3 had a fixed keyboard which limited sales as detached keyboards were becoming popular. The Vector Graphic 4 was a transitional 8/16 bit hybrid model.

Although primarily used with the CP/M operating system, it ran several others including OASIS, Micropolis Disk Operating System (MDOS), and Micropolis Z80 Operating System (MZOS).

Early Vector Graphic models used the Micropolis floppy disk controller and Micropolis floppy disk drives. Later models were designed with the integrated Floppy Drive/Hard Drive controller and used Tandon floppy drives. Almost all used unusual 100 track per inch 5¼" floppy drives and 16 sector hard sector media. Some models included 8" floppy drives and hard disk drives.