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Pascal
Pascal

Pascal. Blaise Pascal
(1623 - 1662) French philosopher, mathematician and physicist who designed and built in 1642 a cogwheel machine that could perform addition and subtraction operations, making it the first mechanical calculator. On the other hand, "Pascal" is the name of a high-level programming language developed in the early seventies as an educational language. This language is used today for general programming.

password
mot m de passe

Password. A set of character attributes that, when given correctly when requested by the computer, allow the user to access it.

PC

Abbreviation for personal computer.

PCB

Abbreviation for printed circuit board.

PC-DOS
PC - DOS

A common operating system used in microcomputers.

peripheral
peripheral

Peripheral. A device that can be connected to and controlled by a computer but is external to the central processing unit (CPU). Examples include: card reader, CD player, bar code reader, joystick, paddles, and visual display unit (VD).

personal computer (PC)
ordinateur m personnel

Personal computer. A relatively powerful minicomputer that is typically used by one person. It is smaller than a mainframe that can be used by several people at the same time, and more powerful than a home computer. It can run operating systems, business software, and gaming software.


Pilot
Pilot

Pilot. A computer programming language designed specifically for developing computer-assisted learning (CAL) packages. This language has 14 simple instructions that allow the author to create sets of questions and direct them to the student according to the given answer.

PIO

Programmable input/output.

pixel
pixel m

Pixel. Microscopic dots (points or PICture Elements) that make up a computer graphic image. The smaller the pixel, the greater their number and the higher the resolution of the image, the more details can be seen. However, the contrast in brightness and the number of colors depends on the number of bits in the pixel.

For example, a monitor screen of 640×250 pixels may allow only four colors, while a screen of 320×250 pixels allows sixteen colors.

PL/M
PL/M

Abbreviation for programming language for micro computers.
It is a revised version of 1/PL .

PL/1
PL/1

A high-level language designed to combine the problem-solving facilities of FORTRAN with the data handling capabilities of COBOL.

plotter
traceur m

A tool for drawing lines on paper, often used to draw two-dimensional computer output. In some of these tools, the pen is capable of moving in two directions, and in others it moves in one direction while the paper is moved at right angles. Another method is to fix the paper on a cylinder capable of rotating back and forth while the pen moves sideways. The movement is generally generated by a stepping motor. The color is obtained by using several pens of different colors (four, for example) and the moving holder selects the appropriate pen at the right time.

In the (y-x) type x-y: The X and Y positions are fed by the computer to the plotter in the form of coordinates drawn by the pens.

In comparison to the y-x plotter which requires X and Y values, the plotting is done in the incremental type based on the data provided by the computer, so the plotting unit moves in its position. Thus, each position is related to the previous position and not to a fixed starting point.

Other devices allow the paper holder to move back and forth in one direction and the pen to move at right angles. In the drum plotter, the paper is fixed to a drum-shaped cylinder that rotates back and forth.

point of sale (POS)
point m de vente

point of sale. The place where the goods are transferred from the seller to the buyer in stores. When you pay at the cashier, the goods become yours and any record related to them, such as the inventory control number, must be changed. The point of sale terminal may have its own backup storage (such as a magnetic cassette) or it may be connected directly to a computer.

See also: electronic funds transfer at point of sale.