SO meaning in Computing ?

Answer: What is Shift Out mean?

Shift Out (SO) and Shift In (SI) are ASCII control characters 14 and 15, respectively (0x0E and 0x0F). These are sometimes also called "Control-N" and "Control-O".

The original meaning of those characters provided a way to shift a coloured ribbon, split longitudinally usually with red and black, up and down to the other colour in an electro-mechanical typewriter or teleprinter, such as the Teletype Model 38, to automate the same function of manual typewriters. Black was the conventional ambient default colour and so was shifted "in" or "out" with the other colour on the ribbon.

Later advancements in technology instigated use of this function for switching to a different font or character set and back. This was used, for instance, in the Russian character set known as KOI7-switched, where SO starts printing Russian letters, and SI starts printing Latin letters again. Similarly, they are used for switching between Katakana and Roman letters in the 7-bit version of the Japanese JIS X 0201.

SO/SI control characters also are used to display VT-100 pseudographics. Shift In is also used in the 2G variant of SoftBank Mobile's encoding for emoji.

The ISO/IEC 2022 standard (ECMA-35, JIS X 0202) standardises the generalized usage of SO and SI for switching between pre-designated character sets invoked over the 0x20–0x7F byte range. It refers to them respectively as Locking Shift One (LS1) and Locking Shift Zero (LS0) in an 8-bit environment, or as SO and SI in a 7-bit environment. In ISO-2022-compliant code sets where the 0x0E and 0x0F characters are used for the purpose of emphasis (such as an italic or red font) rather than a change of character set, they are referred to respectively as Upper Rail (UR) and Lower Rail (LR), rather than SO and SI.

reference

Full Form	Category
Small Outline (package)	Academic & Science
Student Orientation	Academic & Science
The Source Of ....	Academic & Science
Spin Orbit	Academic & Science
Student Organizations	Academic & Science
Shipping Order	Academic & Science
Security Officer	Banking
Sub Office	Banking
Satellite Office	Banking
Southern Company	Business
Second Order	Business
Special Offer	Business
Supporting Organization	Business
Special Order	Business
Strategies and Operations	Business
Softchoice Corporation	Business
Sales Order	Business
Suspece Of Sale	Business
Sulphur Monoxide	Chemistry
Sulfur Monoxide	Chemistry
Sold Out	Community
Stem Only harvest	Community
Step Off Ministry	Community
String Orchestra	Community
Sheriff's Office	Community
Stack Overflow	Computer Assembly Language
Shift Out	Computing
Shared Object	Computing
Shared Objects	Computing
Scene Object	Computing
Somalia (TLD)	Computing
Self Organizing	Computing
Sign Out	Computing
Source Out	Computing
Shared Object (fortran 90)	File Type
Sign Off	General
Sarts Oscar	General
Silesie Orientale	General
Substitutive Outlier	General
Station Offset	General
System Output	General
Sloganeering Org	General
Stykovochnyy Otsek	General
Structured Obligation	General
Shop Order	General
Slip On	General
SOnntag	General
Sistema Operativo	General
stand for on	General
Special Operation	General
Super Overclock	General
Section Officers	General
Seated Only	General
SO in our	General
Senior Officer	General
Stream Output	General
Symptom object	General
Single Output	General
Soap Opera	General
Sophie Or	General
Struvite Oxalate	General
Setting-Out	General
Straight On	Governmental
Solitron	Governmental
Station Officer	Governmental
Shoot Out	Governmental
Support Operations	Governmental
Sustainable Operations	Governmental
Sex Offender	Governmental
Standing Order (Parliamentary procedure)	Governmental
Strategic Objective	Governmental
MAS SLT COTAURS	Indian Railway Station
Soletta	International
Sondrio (Provence)	International
Siehe Oben	International
Show Off	Internet
Son Of	Internet
Someone	Internet
Special Officer	Jobs
Supraorbital	Medical
Sutures Out	Medical
Some Of ....	Medical
Senior Opinion	Medical
Second Opinion	Medical
Secondary Oocyte	Medical
Shoulder Orthosis	Medical
sine oculis (gene)	Medical
Sleep Onset	Medical
sphincter of Oddi	Medical
Standing Orders	Medical
suggestive of	Medical
Superior Oblique	Medical
Superior Olive	Medical
superoxide	Medical
Systolic Output	Medical
Side Of	Medical
Significant Other	Messaging
Sort Of	Messaging
Shout Out	Messaging
Safety Observer	Military and Defence
Silent Observer	Military and Defence
Safety Officer	Military and Defence
Special Orders	Military and Defence
Superseded Or Obsolete	Military and Defence
Special Operations	Military and Defence
Small Outline	Military and Defence
Somali	Regional
South Orient	Regional
Southampton postcode area	Regional
Station Operator	Space Science
Support Operations (ksc Dir.)	Space Science
Strike Out	Sports
Strike Out(s)	Sports
Stock Option	Stock Exchange
Serving Office	Telecommunication