1764-28BXB
1764-28BXB
1764-28BXB
操作系统的功能�？橛心男�？
操作系统通常应包括下列五大功能�？椋�
（1）处理器管理。当多个程序同时运行时，解决处理器（cpu）时间的分配问题。
（2）作业管理。完成某个独立任务的程序及其所需的数据组成一个作业。作业管理的任务主要是为用户提供一个使用计算机的界面使其方便地运行自己的作业，并对所有进入系统的作业进行调度和控制，尽可能高效地利用整个系统的资源。
（3）存储器管理。为各个程序及其使用的数据分配存储空间，并保证它们互不干扰。
（4）设备管理。根据用户提出使用设备的请求进行设备分配，同时还能随时接收设备的请求（称为中断），如要求输入信息。
（5）文件管理。主要负责文件的存储、检索、共享和保护..
VARIAN 398-18398-1 PCB BD
VARIAN 398-18399-1 P.C. BD
VARIAN 398-18489-1 MOTOR
VARIAN 398-18519-4 ASSY, DARK CHANNEL PMT
VARIAN 398-18707-1 ANALOG BD
VARIAN 398-18925-1 P.C. BD
VARIAN 398-19130-1 PCB DARR CH.
VARIAN 3HB70-MX BATTERY
VARIAN 3RE0004200 ROTARY ENCODER
VARIAN 3TBOO46600 TIMING BELT
VARIAN 4000001 BATTERY,NICD,3.6V 0.11AH
VARIAN 40000212 MOTOR DRIVER
VARIAN 400183474 2608 AP ARM
VARIAN 4006300 HEATER, CARTRIDGE
VARIAN 4010005 POWER MODULE, 15V AC/DC OBS SUP 109199001
VARIAN 4010008 POWER, MODULE D15-05 AC/DC
VARIAN 4010009 POWER SUPPLY M1535 15VDC D15-35
VARIAN 4010009 POWER SUPPLY M1535 15VDC D15-35
VARIAN 4010044 DC POWER SUPPLY
VARIAN 4010067 PWRSUP,SW,+5,+15V,-15V
VARIAN 4015709 VALVE,BELL,AIR-OPERATED,BN
VARIAN 4020009 POWER SUPPLY 30V 8A
VARIAN 4020012 POWER SUPPLY
VARIAN 4020027 PWR,SW,OPER,100W LAMBDA LSS-38-24
VARIAN 4020027 PWR,SW,OPER,100W LAMBDA LSS-38-24
VARIAN 4020503 POWER SUPPLY MODULE, POWER IF MODULE
VARIAN 4027900 FILTER IN LINE GAS
VARIAN 402856 PCB,GAS,POWER,SUPPLY
VARIAN 4030030 ASSY, SPELLMAN QUAD LENS POW
VARIAN 4035600 FENCE,PAD
VARIAN 4048500 SENSOR,STRAIN,RELIEF
VARIAN 4050109 RELAY AC QUAD PAK OAC5Q
VARIAN 4050110 RELAY DC QUAD PAK IP
VARIAN 4050111 RELAY AC QUAD PAK INPUT
VARIAN 40660-00 BRACKET, REAR 9 MOUNTING
VARIAN 4085000 INSULATOR,SAFETY SHIELD
VARIAN 410-317993-2 GUIDE
VARIAN 4103156212 COMB
VARIAN 4117487 I/O MODULE OAC5Q BLACK
VARIAN 4137800 PCB ASSY, PSI CONTROL
VARIAN 4139500 SHUTTLE, SPOON RIGHT W/PAD
VARIAN 4139604 INA,200MM SHUTTLE SPOON,TAPE
VARIAN 4144700 MODULE,PSI,SINGLE
VARIAN 4150082 BELT (I/I NOV612-F)
VARIAN 4163500 PAD FRICTION 150/200MM
VARIAN 4185001 PCB TC GAUGE CONTROL
VARIAN 4190200 TUBE VALVE OUTPUT EXTENSION
VARIAN 4191800 MODULE,PSI,DUAL
VARIAN 4196400 BALL SCREW,MODIFIED,ASSY,(ELEVATOR)
VARIAN 4205800 WAFER,THERMAL,CHARGE EXCH OVEN
VARIAN 4217800 PROCESS CONTROL
VARIAN 4223500 SPOON, TEFLON, 150MM
VARIAN 4223900 BRACKET, COLLECTOR CUP RH
VARIAN 42315-02 IPO, GASKET, COPPER
VARIAN 4249001 SLIT PRE AM ASSY
VARIAN 42600099 VALVE
VARIAN 4277369 PRESSURE GUAGE (WIKA)
VARIAN 42781-00 PEDESTAL
VARIAN 42781-00 PEDESTAL
VARIAN 4278100 CUP,RETAINING
VARIAN 4278200 CAP,ELECTRODE,ACCEL/DECEL
VARIAN 4286200 ELECTRODE,GROUND
VARIAN 4288100 CLAMP,RING
VARIAN 4294001 ANZEIGE METER VACUUM ROUGH
VARIAN 42968-00 ELECTRODE ACCEL/DECEL
VARIAN 42988-00 FAB, CLAMP, POSITIVE, TERMINAL
VARIAN 4299100 PLUG,VAPOR INLET
VARIAN 43027-12 PIN COTTER .090X3/4"LONG SST
VARIAN 43100580 VALVE, GAS, VCR
VARIAN 43168-00 SWITCH, DOOR
VARIAN 43351-00 IPO, FOOT, LEVELING
VARIAN 4338400 SHUTTLE, SPOON RIGHT W/O PAD
VARIAN 4338500 SHUTTLE, SPOON LEFT W/O PAD
VARIAN 43475-00 BLANKOFF, SHIPPING
VARIAN 4368100 ELECTRODE,ACCEL/DECEL
VARIAN 4371100 FLANGE, SOURCE BUSHING
VARIAN 43765-00 FAB, ADJUSTER, CARRIAGE-X
VARIAN 43842-00 FEEDTHRU,SUPRESSION,20KV
VARIAN 4384200 FEEDTHRU SUPPRESSION
VARIAN 4384700 CONT.NT/20,(RFM=43847-01)
VARIAN 440003101 I/F BOARD
VARIAN 4410000 INSERT,FARADAY
VARIAN 4410000 INSERT,FARADAY
VARIAN 4410200 APERTURE EXCHANGE
VARIAN 44103-00 DUMP, BEAM, CON
VARIAN 44103-0010 SWITCH, INTERLOCK, ABLASER
VARIAN 4410300-00 DUMP, BEAM, CON
VARIAN 44200-19 IPO, CLAMP, SWIVEL, SCREW 5/8-11
VARIAN 4448800 FILTER, TRAP EXHAUST NW40 SST
VARIAN 44513-0010 SWITCH, INTERLOCK, ABLASER
VARIAN 4457000 ARM,SHUTTLE,W/DAMPING ELE
VARIAN 4470200 SPOON MOUNTING BLOCK
VARIAN 4500007 RELAY 2 PTDT 110V
VARIAN 4500010 RELAY 12VDC,3PDT
VARIAN 4500017 RELAY, 24V
VARIAN 4500050 RELAY
VARIAN 4500091L RELAY 3PDT 24VDC
VARIAN 4500097 RLY. 4 PDT. 3NO/INC
VARIAN 45319-00 ARC CHAMBER SINGLE
VARIAN 4531900 ARC, CHAMBER, SINGLE
VARIAN 4550050 SCHUETZ CONTACTOR SPULE 208V 25A 2POLIG
VARIAN 4560301 CABLE ELECTRONIC SUPPLY PS HV
VARIAN 471220901 SHIELD,CERAMIC CLIP
VARIAN 471404902 SHIELD
VARIAN 471452301 SPRING SLEEVE
VARIAN 4715270 COLOR RESISTANCE 270 ohm
VARIAN 4715332 RESISTER,3.3K
VARIAN 471691401 SLEEVE,HEATER SUPPORT
VARIAN 471867601 INSULATOR CERAMIC
VARIAN 4726044 RES, MF, 1/4W, 24 9K, 1%
VARIAN 4751037 POT, MOTOR, 1T, 2.
VARIAN 4752001 MOTOR, 24VDC
VARIAN 4752004 POTENT.10 TURN R1K L (MH20B-10 CARLSBAD)
VARIAN 4752005 POTENTIO METER (5K)
VARIAN 4754012 POTENTIOMETER, 3 3/4 TURNS
VARIAN 4764001 PLATE RESISTOR
VARIAN 480006361 CABLE KV 1.25SQ(50/0.18) WHITE (1000 MM-2)
VARIAN 4810002 DIODE
VARIAN 4810006 RECT.DIODE,DUAL,200A
VARIAN 4820026 EMITTER INFRA-RED
VARIAN 4827005 CABLE FIB OPT DUAL
VARIAN 4827005 CABLE FIB OPT DUAL
VARIAN 4827008 FIBEROPTIC, CABLE, 3M
VARIAN 4830038 RECTIFIER BRIDGE
VARIAN 4850032 TRANSISTOR
