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Integrated

integrated circuit (IC)

or microcircuit or chip or microchip

Assembly of microscopic electronic components (transistors, diodes, capacitors, and resistors) and their interconnections fabricated as a single unit on a wafer of semiconducting material, especially silicon. Early ICs of the late 1950s consisted of about 10 components on a chip 0.12 in. (3 mm) square. Very large-scale integration (VLSI) vastly increased circuit density, giving rise to the microprocessor. The first commercially successful IC chip (Intel, 1974) had 4,800 transistors; Intel's Pentium (1993) had 3.2 million, and more than a billion are now achievable.

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The Integrated, Intra-Squad Radio (IISR) is a secure handheld 2-way radio, produced by Motorola for the US Marine Corps. Its intended purpose is squad level communications during urban warfare. The USMC has ordered 60,000 radios, at about $1300 a piece, to be used until replaced by the more complex JTRS cluster 5 spiral 2 radio in 2013. The IISR is similar in form and function to a Motorola Talkabout handheld radio, however, it features more secure communications.

The chosen radio was based on the Motorola XTS 2500i with embedded encryption module, which was essential to provide secure voice communications, especially in war zones.

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