ASCII Value

Computers only understand numbers. So how do they handle letters, punctuation, and symbols? ASCII — the American Standard Code for Information Interchange, published in 1963. Every character you type is secretly a number. Press A and your computer stores 65. Type a space and it stores 32. ASCII defines 128 such mappings — from 0 to 127 — covering everything a classic keyboard can produce. The four regions of ASCII Control characters 0 – 31 Non-printing signals: newline, tab, backspace, null Digits & punctuation 32 – 64 Space, !, ", 0–9, :, ;, @, and more Uppercase letters 65 – 90 A through Z Lowercase letters 97 – 122 a through z