أكاديميا - كولنز - معاجم الجيب العلمية - الكمبيوتر - انكليزي - فرنسي - عربي الحرف ٢_b

Academia - Collins - Pocket Scientific Dictionaries - Computer - English - French - Arabic Letter 2_B

Beginner's All - purpose Symbolic Instruction Code

See BASIC .

benchmark
évaluation f des performances

Benchmark . A programming task given to different computers to test their performance, which allows for comparison.

binary coded decimal (BCD)
decimal coded binaire

Binary coded decimal . From 0 to 9 to a binary number we need four binary digits . This system uses four binary digits for each decimal digit .

binary - decimal
decimal - binary - hexadecimal

But we notice that we can reach the number 15 with four binary digits with this coding. The last six digits are coded with letters in the hexadecimal system .

binary digit
chiffre m binaire

binary digit . Either 0 or 1. It is one of the two numbers used in binary notation.

binary fractions
fractions fpl binaires

Binary fractions. Each binary digit is twice the value of the binary digit to its right, whether it comes before or after the decimal point.

For example: 11.1 in binary represents 2+1+1/2+1/4 in decimal.

binary notation
notation f binaire

Binary notation. In this system, numbers are represented by the digits 0 and 1, i.e. in base 2.

binary
decimal
binary
decimal

.. and so on.

When we count by tens (base 10), each digit has ten times the value of the digit to its right. In binary (base 2), each digit has twice the value.
For example: 10011 in binary equals 19 in decimal:

16+0+0+2+1=19

Using the same rules for decimal arithmetic:

Binary addition

0010
+1011
-----------
1101

Binary subtraction

1101
0110-
------------
0111

Because binary notation has only two digits, it can be easily represented electronically at two voltage levels and can be stored in any two-state system. That is why it is used in computers.

bistable
bistable f

Bi-stable. This description uses a two-state electronic device, which is the basis of computer memory.

It can be considered in one state as representing 0 and in the other as representing 1.

bit
bit m

Bit. One of the two digits 0 and 1 used in binary notation.
The word is derived from Binary digit.

black box
boîte f noire

Black box. A concept used to understand how units are put together to create a network or system without having to understand the workings of the individual units.

For example: a public address system, or a sound reinforcement system, might consider
three black boxes.

Microphone - amplifier - loudspeaker

The amplifier itself can be thought of as three black boxes:
Preamplifier - Low gain amplifiers - Power amplifier