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Drs. Linga Hermanto, MMSI Drs. Linga Hermanto, MMSI
STMIK STI & K JAKARTA
Computer Science & IT

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TEST EQUIPMENT SPECIFICATIONS TRANSISTOR Didiek Andiana Ramadan; Drs. Linga Hermanto, MMSI Drs. Linga Hermanto, MMSI
Jurnal Sistem Komputer 2005
Publisher : STMIK Jakarta

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Abstract

In this paper, we design a test apparatus Transistor Specification. Specification is atype of transistor is a transistor and common emitter current reinforcement value ( βDC ). The system will provide information in the form of an LED display emits greenlight when the tested types of NPN transistor and the second LED emits blue lightwhen the tested types of PNP transistors.To test the value of β, whose value is proportional to the display used by the collectorcurrent Ic.
STUDY DESIGN BEGINNING TO AHCII DTMF DECODER MICROCONTROLLER AT89C2051 ( CASE STUDY TOOLS PHONE NUMBER ON LCD VIEWER, THE SED 1200 ) Dwi Estuning Impiyanti; Drs. Linga Hermanto, MMSI Drs. Linga Hermanto, MMSI
Jurnal Sistem Komputer 2002
Publisher : STMIK Jakarta

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Abstract

Viewer numbers are very commonly used in telephone on-telephone kiosks. To theauthors tried to make the tool viewer phone numbers that can be used at home, in theoffice and anywhere.Outstanding aircraft now mostly use the digital receiver. Digital telephone usingDTMF tones to identify the phone number buttons are pressed. To read the DTMFtones required special components that can detect these tones and translate them intobinary code. Binary code is then converted into ASCII coded signal by themicrocontroller to display on the LCD. LCDs are used here is a cheap LCD dotmatrix LCD is SED1200. Compared with other LCD LCD is relatively cheaper.
PROTOTYPE DESIGN SYSTEM WITH LIFT PENDITEKSI IBM PC COMPUTER-BASED SMOKE Freddy Susanto; Drs. Linga Hermanto, MMSi Drs. Linga Hermanto, MMSi
Jurnal Sistem Komputer 2002
Publisher : STMIK Jakarta

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In the development of transportation in the present, not just transportationtransportation vertical, but horizontal transport dibituhkan is to climb high-rises.Because it used a tool called an elevator.As transportasu vertically, the safety factor for horizontal transport is also veryimportant. Therefore one of the security tools that should be there is a smoke sensorin the elevator.That is a tool that can detect the smoke inside the elevator. Why use smoke sensors,because sensors can detect the smoke particles are small and a bit of smoke. So as todetect a larger smoke coming from fires can be detected properly.
Co-Authors Didiek Andiana Ramadan Dwi Estuning Impiyanti Freddy Susanto