Technology

Articles about devices, tools, digital systems and innovation.

Articles in this category: 1835 Updated: April 29, 2026 Page 30 / 39

Sharpie

Shift key

Shift key

Shift key (keyboard modifier)

Modifier key used to produce uppercase letters and alternate symbols, used in selection, shortcuts and accessibility. Originated with typewriters; variants include Shift Lock and C

Shotgun

Shotgun: design, ammunition, types, history and uses

Shovel

Shutter

Shutter: architecture, optics, organ, and film

Shutter (photography)

Shuttle

Shuttle

Shuttle (weaving tool): types, history and function

A shuttle is a hand or machine tool that carries weft yarn through the warp shed to form woven cloth; types, construction, history and modern variations explained.

Sickle

Sickle (curved agricultural hand tool)

Side effect (computer science)

Side-scrolling video game

Silicon controlled rectifier

Silly Putty

Silly Putty — origins, properties, uses, and cultural impact

SIM card

SIM card: function, types, history, and practical considerations

SIMATIC

SIMATIC — Siemens industrial automation system and PLC family

Simulation

Simulation: concepts, methods, history, and applications

Simulation video game

Simultaneous multithreading

Simultaneous multithreading (SMT): overview, operation, history and uses

Single event upset

Single Event Upset (SEU): causes, effects, and mitigation

Single-player video game

Siren (noisemaker)

Siri

Skunk Works

SkyOS

SkyOS: a privately developed desktop operating system

Slack (software)

Slack: team communication and collaboration platform

Slackware

Slackware — a conservative, minimalist GNU/Linux distribution

Slide projector

Slide projector

Slide projector: design, history, and uses

An optical device that enlarges and projects photographic slides onto a screen. Covers components, operation, historical role, modern replacements, safety and practical distinction

Slide rule

Slide rule (slipstick): an analog calculator for scientific use

Slingshot

Slot machine

Smart card

Smart card (integrated circuit card)

Smart grid

Smart Technologies

Smart Technologies (SMART Technologies Inc.)

Smartphone

Smartphone

Smartwatch

Smartwatch (wearable computerized wristwatch)

Smoke detector

Snapchat

SNES Mouse

Sniper scope

Sniper scope (riflescope): design, history, uses, and distinctions

Software

Computer Software: Types, History, and Development

Software as a service

Software bug

Software bug: definition, causes, detection, and impact

Software Development Kit

Software extension

Software extension: purpose, design, history, and common uses

Software release

Software release life cycle

Software suite

Software versioning

Software versioning: schemes, purposes, and practical practices

Solar cell

Solar cell: principles, types, history, and practical uses