- For other uses, see: General Instrument (disambiguation)
General Instrument (GI) was an electronics manufacturer based in Horsham, Pennsylvania specializing in semiconductors and cable television equipment. The company was active until 1997, when it split into General Semiconductor (power semiconductors) which was later acquired by Vishay Intertechnology in 2001, CommScope and NextLevel Systems (the cable and satellite TV division, which later reverted to GI name). The new (post-split) General Instrument Corporation was later acquired by Motorola and became Motorola Connected Home Solutions, and was renamed Home and Networks Mobility in 2007. When Motorola split on January 4, 2011, this division became part of Motorola Mobility. On December 19, 2012, ARRIS announced that it would acquire Motorola Mobility's Home unit (the former General Instrument company) from Google for $2.35 billion in cash and stock. The acquisition was completed on April 17, 2013. 
General Instrument produced receivers for old C and Ku band satellites. They also produced Videocipher units as well as digital equipment. 4DTV was a system for picking up free and encrypted analog and digital satellite subscription channels. It also included an interactive guide. The product line included:
- 2700 Series: on screen displays, C/Ku switching, digital sound, satellite memory increases with the model number.
- 2600 Series: similar to 2400 except with on-screen displays.
- 2400/2500 Series: no on-screen displays, everything is controlled from the remote and front panel. Two alphanumeric displays indicate the current satellite and transponder. A GI 2000PS is needed to use a dish motor. Digital Stereo Audio is available on VideoCipher channels, C/Ku compatible. The 2400 was re-branded in the early 1990s by Rural Cable and sold with a fixed C band dish pointed at Galaxy 5.
- 350 Regular: simple receiver with a separate dish mover (some will have a stationary G5 satellite).
- 350i Super: extensive on-screen displays, 50 satellites (C or Ku with external switch), digital sound.
- 450i/550i/650i: extensive on-screen displays, C/Ku pre-programmed satellites, digital sound, extras.
- 4DTV: interactive program guide, two favorite lists, C/Ku band, many other features.
American Totalisator Corporation/AmTote
Underseas Lab (Harris ASW)
Underseas Lab was a division of General Instrument Corp located in Westwood Mass. It invented and manufactured multibeam sonars used in ocean floor mapping. It was acquired by Channel Technologies and is now owned by L-3 Communications.
Jerrold was GI's original cable TV brand, active from 1948 into the early 1990s. Around 1993, GI dropped the Jerrold branding. The Jerrold brand was prominent on both addressable and non-addressable cable TV converter boxes that were used on non-cable ready sets and cable-ready sets with premium pay services. "Jerrold" is the middle name of the company's founder, Milton Jerrold Shapp, who became Pennsylvania's 40th governor in 1971.Shapp's given name was Milton Shapiro.
GI Microelectronics was a manufacturer of LSI circuits and a pioneer in MOS technology and EAROM (Electrically Alterable ROM), with both off-the-shelf and custom circuits. GI spun the division off as Microchip Technology in 1987.
In 1980, their product catalog included:
- 16-bit Microprocessor: CP1600 and 1610, a 16-bit CPU, used in the GIMINI TV-game set and in Mattel's Intellivision
- 8-bit Microcontroller: the PIC1650, an NMOS chip. The CMOS version of this chip is the basis of today's PIC microcontrollers.
- Telecommunications chips
Other products included the famous AY-3-8910/11/12/14 series of sound chips, the AY-3-85xx, 86xx, 87xx series of game chips and a single-chip speech synthesizer, the SP0256 Narrator. A version of the SP0256 appeared in Mattel's Intellivoice. The popular SP0256-AL2 variant comes with a set of allophones built in.
- ARRIS Group, Inc. (December 19, 2012). "ARRIS To Acquire Motorola Home Business For $2.35 Billion In Cash And Stock" (Press release). Thomson Reuters.
- Tess Stynes (December 20, 2012), Google Sells Cable-Box Unit for $2.35 Billion, The Wall Street Journal: B2
- "ARRIS Acquires Motorola Home: Creates Premier Video Delivery and Broadband Technology Company Powerful Combination Transforms Industry, Accelerates Innovation" (Press release). April 17, 2013.
- "General Instrument Microelectronics Renamed Microchip Technology Incorporated as Wholly Owned Subsidiary". 14 December 1987. Retrieved 8 January 2009.
- "PONG in a chip". Retrieved 26 August 2011.
- GI chooses Rumsfeld as CEO, October 1990, Multichannel News