Ascii creates what kind of data

Characters Characters can also be represented in binary. Unicode can represent 65, characters Unicode uses 16 bits to represent each character Unicode can represent a greater range of character sets than ASCII There are adapted forms of the original Unicode standard capable of representing millions of characters. Higher Subjects Higher Subjects up. Parity Bit. For example:. Text characters start at denary number 0 in the ASCII code, but this covers special characters including punctuation, the return key and control characters as well as the number keys, capital letters and lower case letters.

ASCII code can only store characters, which is enough for most words in English but not enough for other languages. If you want to use accents in European languages or larger alphabets such as Cyrillic the Russian alphabet and Chinese Mandarin then more characters are needed.

Control codes are used in communications and printers. In English, they are combined with other characters to form words. Examples of characters are;. Variables used in a Pascal program are declared after the keyword var. Each character is stored one after the other, each occupying eight bits of memory storage. Eight bits of memory storage are allocated to store each character in the string a total of 22 bytes , with the value in each byte as yet undetermined.

A more efficient way of storing numeric information is to use a different encoding scheme. The encoding scheme in most use is shown below,. Integers store whole numbers only! They do not contain fractional parts. Consider the examples below,.

The sign bit which is bit 15 indicates whether the number is positive or negative. A logic 1 indicates negative, a logic 0 indicates positive. To store larger integer values would require more bits.

Some systems and languages also support the use of unsigned integers, which are deemed to be positive only. An efficient way of storing fractions is called the floating point method, which involves splitting the fraction into two parts, an exponent and a mantissa. The computer industry agreed upon a standard for the storage of floating point numbers.

It is called the IEEE standard, and uses 32 bits of memory for single precision , or 64 bits for double precision accuracy. The single precision format looks like,. NOTE: Keep dividing by 2 till a fraction between 0 and 1 results.