Body Computer: Summary

Body Computer
A computer is an electronic device that stores and processes data and is capable of operating other devices. The operation of the computer is divided into four basic functions: input, processing, storage, and output. Binary numbers are represented by the numbers 1 and 0. A transistor that operates as...

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Outputs

Duty cycle is the percentage of on time per cycle. Duty cycle can be changed; however total cycle times remains constant
Once the computer's programming instructs that a correction or adjustment must be made in the controlled system, an output signal is sent to an actuator. This involves translating the electronic signals into mechanical motion. An output driver is used within the computer to control the actuators. The circuit driver usually applies...

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Information Processing

The microprocessor addresses the lookup tables in the ROM, retrieves air density information, and issues commands to the output devices
The air charge temperature (ACT) sensor input will be used as an example of how the computer processes information. If the air temperature is low, the air is denser and contains more oxygen per cubic foot. Warmer air is less dense and therefore contains less oxygen per cubic foot. The...

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Computer Memory

EPROM memory is erased when the ultra-violet ray contact the microcircuitry
The computer requires a means of storing both permanent and temporary memory. The memories contain many different locations. These locations can be compared to file folders in a filing cabinet, with each location containing one piece of information. An address is assigned to each memory location. This address may be...

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Microprocessor

Main components of the computer and the Microprocessor
FIGURE. Main components of the computer and the Microprocessor. The microprocessor is the brain of the computer. The microprocessor is constructed of thousands of transistors that are placed on a small chip. The microprocessor brings information into and out of the computer's memory. Hie input information is processed in the microprocessor...

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Analog and Digital Principles

Analog voltage signals are constantly variable. Digital voltage patterns are either on or off. Digital signals are referred to as a square sine wave
Remembering the basics of electricity, voltage does not flow through a conductor; current flows and voltage is the pressure that "pushes" the current. However, voltage can be used as a signal; for example, difference in voltage levels, frequency of change, or switching from positive to negative values can be used...

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Computer Functions

A computer processes the physical conditions that represent information (data). Hie operation of the computer is divided into four basic functions: Input: A voltage signal sent from an input device. This device can be a sensor or a switch activated by the driver or technician. Processing: The computer uses the...

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