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An X–Y plotter is a plotter that operates in two axes of motion ("X" and "Y") in order to draw continuous vector graphics. The term was used to differentiate it from standard plotters which had control only of the "y" axis, the "x" axis being continuously fed to provide a plot of some variable with time.
The Calcomp 565 drum plotter, [3] [4] introduced in 1959, was one of the first computer graphics output devices sold. The computer could control in 0.01 inches (0.25 mm) increments the rotation of an 11-inch (280 mm) wide drum, and the horizontal movement of a pen holder over the drum.
This hardware allowed the user to select any point on a display, and to input its coordinates to a computer, allowing support of a CAD system. [4] The 4010 series was also used as the basis for two self-hosted systems. The Tektronix 4050 series used the 4010 or 4014 with internal processors and a DC300 tape unit to produce a simple desktop unit ...
A computer can still function without an output device, as is commonly done with servers, where the primary interaction is typically over a data network. A number of protocols exist over serial ports or LAN cables to determine operational status, and to gain control over low-level configuration from a remote location without having a local ...
The storage of computer programs is key to the operation of modern computers and is the connection between computer hardware and software. [7] Even prior to this, in the mid-19th century mathematician George Boole invented Boolean algebra —a system of logic where each proposition is either true or false.
8 Pocket computer. Toggle Pocket computer subsection. 8.1 LX series. 8.2 OmniGo series. 8.3 Jornada. 8.4 iPAQ. ... Download as PDF; Printable version; In other ...
The Kelsh Plotter is an example of the projection stereoplotters. The analog stereoplotters came next and were more sophisticated in that they used more sophisticated optics to view the image. The analytical stereoplotter is used today. It incorporates a computer which does the work of mathematically aligning the images so that they line up ...
Turtle graphics are often associated with the Logo programming language. [2] Seymour Papert added support for turtle graphics to Logo in the late 1960s to support his version of the turtle robot, a simple robot controlled from the user's workstation that is designed to carry out the drawing functions assigned to it using a small retractable pen set into or attached to the robot's body.