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(完整版)单片机毕业参考英文文献及翻译.doc
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(完整版)单片机毕业参考英文文献及翻译.doc
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(完整版)单片机毕业参考英文文献及翻译
Structure and function of the MCS-51 series
Structure and function of the MCS-51 series one-chip computer MCS-51 is a name
of a piece of one-chip computer series which Intel Company produces。 This company
introduced 8 top-grade one—chip computers of MCS—51 series in 1980 after
introducing 8 one-chip computers of MCS-48 series in 1976. It belong to a lot of
kinds this line of one—chip computer the chips have,such as 8051, 8031, 8751,
80C51BH, 80C31BH,etc。, their basic composition, basic performance and instruction
system are all the same. 8051 daily representatives— 51 serial one-chip computers 。
An one—chip computer system is made up of several following parts: ( 1) One
microprocessor of 8 (CPU)。 ( 2) At slice data memory RAM (128B/256B),it use not
depositting not can reading /data that write, such as result not middle of
operation, final result and data wanted to show, etc. ( 3) Procedure memory ROM/EPROM
(4KB/8KB ) , is used to preserve the procedure , some initial data and form in
slice. But does not take ROM/EPROM within some one-chip computers, such as 8031 ,
8032, 80C ,etc。. ( 4) Four 8 run side by side I/O interface P0 four P3, each mouth
can use as introduction , may use as exporting too. ( 5) Two timer / counter, each
timer / counter may set up and count in the way, used to count to the external
incident, can set up into a timing way too, and can according to count or result of
timing realize the control of the computer。 ( 6) Five cut off cutting off the control
system of the source . ( 7) One all duplexing serial I/O mouth of UART (universal
asynchronous receiver/transmitter (UART) ), is it realize one-chip computer or
one-chip computer and serial communication of computer to use for。 ( 8) Stretch
oscillator and clock produce circuit, quartz crystal finely tune electric capacity
need outer。 Allow oscillation frequency as 12 megahertas now at most. Every the
above-mentioned part was joined through the inside data bus .Among them, CPU is a core
of the one—chip computer, it is the control of the computer and command centre,
made up of such parts as arithmetic unit and controller , etc.. The arithmetic unit
can carry on 8 persons of arithmetic operation and unit ALU of logic operation
while including one, the 1 storing device temporarilies of 8, storing device 2
temporarily, 8’s accumulation device ACC, register B and procedure state register
PSW, etc 。 Person who accumulate ACC count by 2 input ends entered of checking
etc. temporarily as one operation often, come from person who store 1 operation is
it is it make operation to go on to count temporarily , operation result and
loopback ACC with another one. In addition, ACC is often regarded as the transfer
station of data transmission on 8051 inside . The same as general microprocessor, it
is the busiest register. Help remembering that agreeing with A expresses in the
order。 The controller includes the procedure counter , the order is depositted, the
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