USASCIIa

USASCIIa is a character encoding standard that was developed in the United States. It is a variant of the American Standard Code for Information Interchange (ASCII). ASCII is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Most modern character encoding schemes are derived from ASCII, and the Unicode standard is a superset of ASCII.

The original ASCII standard used 7 bits to represent characters, allowing for 128 possible characters, including uppercase and lowercase letters, digits, punctuation marks, and control characters. USASCIIa likely refers to a specific implementation or extension of ASCII, possibly with minor differences or additional characters compared to the standard. These variations sometimes arose due to different hardware or software implementations, or to accommodate specific regional needs. Understanding the exact specifications of USASCIIa would require consulting the documentation related to its specific usage or origin. Without further context, it's understood as a related encoding to the widely adopted ASCII.