Titlebook: Microcomputers and Laboratory Instrumentation; David J. Malcolme-Lawes Book 1984 Springer Science+Business Media New York 1984 Laboratory.

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largesse

The Basics of Laboratory Signals,ngle, velocity or acceleration. However, virtually all such physical characteristics may be converted into some form of electrical signal by an appropriate energy conversion device known as a transducer. Some typical transducers are listed in table 2.1, along with the nature of the particular energy stimulus for which each is designed.

染色體

大廳

The Elements of Digital Signal Handling, define electrical signal values to represent the levels of hi and lo. One of the most widely used conventions requires the level hi to be represented by a voltage of +5 V, and the level lo by 0 V, both being relative to ground. Later in this chapter we shall examine this convention a little more closely and consider one or two alternatives.

NATTY

The Modern Microcomputer,With the exception of some of the Hewlett Packard range, few are actually intended to be used for instrumental purposes in scientific laboratories, although many can fulfill this role surprisingly well.

絕食

System Design,s are the same no matter what the system components will be and the choice of a microcomputer component should be made on the same logical grounds as that for any other part of the system. However, once a microcomputer component is decided the design process departs significantly from that used for “hardware-only” systems.

機(jī)制

Standard Interface Systems,een the two, the “standards” are primarily concerned with the characteristics of the signals involved — their number, signal levels, impedances, timings etc. — rather than with the actual electronic circuits in either interface, although some characteristics of the latter may be important.

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