描述
这3个层次各有各的应用范围。从应用开发角度看,在相当长的一段时间内,都是采用前2种方法。第3层次设计方法对一般具体应用人员来说,只能用来设计简单的单片系统。而复杂的单片系统则是某些大的半导体厂商才能设计和实现的,并且用这种方法实现的单片系统,只可能是那些广泛使用、具有一定规模的应用系统才值得投入研制。还有些应用系统,因为技术问题或商业价值问题并不适宜用单片实现。当它们以商品形式推出相应单片系统后,应用人员只要会选用即可。所以,3个层次的设计方法会并存,并不会简单地用后者取代前者。初级应用设计人员会以第1种方法为主;富有经验的设计人员会以第2种方法为主;很专业的设计人员会用第3种方法进行简单单片系统的设计和应用。但所有的设计人员都可以应用半导体大厂商推出的用第3种方法设计的专用单片系统。
我们这里有您急需的停产备件,
优势现货,询不到的,买不到的,请联系我们!
绝 对优势,绝 对低价!绝 对正品,优质的产品,一流的服务,充足的库存,
欢迎来电询价,我们将会给您最优惠的价格!
主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
HP AGILENT 04085-61651 FIBER OPTIC TEST FUXTURE ADAPTER
AIRTIGHT NETWORKS SPECTRAGUARD SA-210 WIRELESS VPN
AGILENT HP 8590A 1.5 GHz RF SPECTRUM ANALYZER 021 -G
AGILENT HP K382A WAVEGUIDE ATTENUATOR WITH 2X K281C
TTC ACTERNA JDSU FIREBERD 41075 ISDN S/T TE INTERFACE
MATRIX PSX-6 SIGNAL GENERATOR CATV 4-CHANNEL
OPTO POWER OPC-PS4005 LASER DIODE DRIVER 40A 40 A AMP
COAXIAL DYNAMICS 83550 DIGITAL RF WATTMETER EXPEDITER
Cisco AS5300 Chassis RAS VOIP IVR 64/16/8 AC
PTS 160 MHz FREQUENCY SYNTHESIZER SIGNAL GENERATOR GPIB
CORELIS NETICE-R JR ROM LAN BASED ROM EMULATOR NO JTAG
AGILENT HP 16700A & 3 16557D LOGIC ANALYZER MAINFRAME
ADTECH 1GBPS GENERATOR ANALYZER 401400 & DS3 INTERFACE
EMBEDDED PERFORMANCE MAJIC JTAG INTERFACE CONTROLLER
MOTION ANALYSIS VP320 CAMERA VIDEO PROCESSOR DIGITIZER
AGILENT HP 70842B ERROR DETECTOR 0.1 – 3 GBIT/s
AGILENT HP 70612A K52 MMS INTERFACE POWER AMPLIFIER
ANRITSU MP1552B SDH PDH ATM ANALYZER
AVANEX OPTICAL AMPLIFIER EDFA 13 dBm 800-1700 nm
TEKTRONIX TCPA300 AC/DC CURRENT PROBE AMPLIFIER
NIKON SMZ800 STEREOZOOM MICROSCOPE BODY
LEICA 10445822 STEREOZOOM MICROSCOPE HEAD MZ SERIES
WILD LEICA M8 STEREO ZOOM MICROSCOPE 20X EYEPIECES
AGILENT HP 70810B LIGHTWAVE SECTION 1200 – 1600 nm
NIST SRM 2517 Wavelength Reference Absorption SRM-2517a
AGILENT HP N1738A AURORAPRESTO ADSL HANDHELD TESTER
BRONKHORST E-7120 MFC GAS FLOW CONTROLLER E-7000
NATIONAL INSTRUMENTS NI PXI 6052E MULTIFUNCTION DAQ
GRASS VALLEY GROUP GVG MAX 9000 SDI DISTRIBUTION AMP
HUGHES 1177H07F000 TRAVELING WAVE TUBE AMPLIFIER 10 W
ACCURATE GAS CONTROL 354C CHILLER HEATER RECIRCULATOR
THOMAS & BETTS T&B 13100A 14TON HYDRAULIC CRIMPING HEAD
STRUERS ACCUTOM PRECISION VARIABLE CUT OFF SAW BUEHLER
WILD M8 STEREOZOOM MICROSCOPE PLAN 1X OBJECTIVE
DICON PS-22-4-9-13/15-FC/APC FIBER OPTIC SWITCH GP700M
SCHLEUNIGER CC-15 GRIP TECH COMPONENT COUNTING SYSTEM
KEITHLEY 487 PICOAMETER VOLTAGE SOURCE
MIRANDA SYMPHONIE 5X SDA-102I 10X ADP-101I AMPLIFIER -P
CORELIS NETICE-R JR ROM LAN BASED ROM EMULATOR NO JTAG
HASKRIS R100 REFRIGERATED WATER RECIRCULATING SYSTEM
SORENSEN DCS80-37E DCS 80 PROGRAMMABLE DC SUPPLY GPIB
HP AGILENT 83487A H46 OPTICAL ELECTRICAL PLUG-IN
MIRANDA SYMPHONIE 10X ADP-101I VFC-123I SDM-712I -R
TEKTRONIX CSA803 CSA 803 COMMUNICATIONS SIGNAL ANALYZER
DICON PM-1X16-9-13/15-FC/APC FIBER OPTIC SWITCH GP700M
PHOTONETICS TUNICS METRICOR 1450 FIBEROPTIC MULTISENSOR
UDT 2500 INTEGRATING SPHERE LASER POWER ATTENUATOR
HIOS HP-100 TORQUE METER TESTER HP 100
LARUS STS 5400 DS1 (E1) SYNCHRONIZATION TIMING SYSTEM
XYLAN OMNISWITCH 5 SLOT 13.2 GBPS AC
HP AGILENT 33220A 20MHZ FUNCTION WAVEFORM GENERATOR
Evertz 8074 Digital Video Closed Caption Encoder
ALLEN BRADLEY 2802-CAM1 LINE SCAN CAMERA W 2801-EIA
UDT 2500 INTEGRATING SPHERE LASER POWER ATTENUATOR
ANRITSU MU931311A OPTICAL POWER SENSOR 800-1600NM
SUNRISE TELECOM SUNSET E1 HANDHELD TESTER SS200
AEROTECH ATS100-50-U-20P LINEAR STAGE MOTION CONTROL
TANDBERG TELEVISION MX5620 MULTIPLEXER EVOLUTION 5000
NIKON P-BERG TILTING MICROSCOPE HEAD WITH C-W10X 22
SORENSEN XANTREX DCS80-37 DCS 80V DC POWER SUPPLY GPIB
DRUCK GE DPI 145 DIGITAL PRESSURE INDICATOR 30 IN H2O G
MIRANDA SYMPHONIE 9X ADP-101I SDM-722I VFC-123I -J
DRUCK GE DPI 145 DIGITAL PRESSURE INDICATOR 60 KPA G
SPIRENT SMARTBITS POS-3505As OC-48C TERAMETRICS TESTER
HP AGILENT 6575A DC POWER SUPPLY 120 V 18 A 2000 W
MIRANDA SYMPHONIE X4 ASD-702I SDM-702I SDM-722I -A
SPIRENT SMARTBITS POS-3502A OC-3 SMARTMETRICS MODULE
NESLAB THERMO COOLFLOW CFT-33 LAB CHILLER RECIRCULATOR
SORENSEN DCS150-7E 1000W DC POWER SUPPLY GPIB
SPECTRA PHYSICS HS50A-NSI LASER 30HZ
TIMETER MEDICAL VENTILATOR CALIBRATION ANALYZER SERIES
HP AGILENT 37717C OMNIBER 717C ATM SDH PDH ANALYZER – C
BRONKHORST W-202-880-P CONTROLLED EVAPORATOR MIXER CEM
SEIKOH GIKEN RCG-520-MUU MU PLATE FIBER POLISHING 520
EG&G ASTROPHYSICS MAIL BOX SECURITY X-RAY XRAY SYSTEM
AGILENT HP 8922H GSM MOBILE STATION TEST SET ~ 8922M
AMREL MPS 60-10 PROGRAMMABLE DC POWER SUPPLY MPS60-10
F W BELL 5080 GAUSS TESLAMETER WITH PROBE STD58-0404
FLUKE 2625A HYDRA DATA LOGGER WITH UNIVERSAL MODULE
UDT INSTRUMENTS S380 DUAL-CHANNEL POWER METER OPTOMETER
EXFO NOVACURE 2100 SPOT CURING SYSTEM
HP AGILENT 1671D LOGIC ANALYZER 100 MHZ STATE 030
DELTA F CORP FA31110SA OXYGEN ANALYZER 115VAC