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LM78 Datasheet Microprocessor System Hardware Monitor

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM78 Microprocessor System Hardware Monitor February 2000 LM78 Microprocessor System Hardware.

General Description

The LM78 is a highly integrated Data Acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor based system.

In a PC, the LM78 can be used to monitor power supply voltages, temperatures, and fan speeds.

Actual values for these inputs can be read at any time, and programmable WATCHDOG limits in the LM78 activate a fully programmable and maskable interrupt system with two outputs.

Key Features

  • n n n n n n n n n Temperature sensing 5 positive voltage inputs 2 op amps for negative voltage monitoring 3 fan speed monitoring inputs Input for additional temperature sensors Chassis Intrusion Detector input.

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