描述
標(biāo)準(zhǔn)的Linux內(nèi)核通常駐留在內(nèi)存中,每一個應(yīng)用程序都是從磁盤運(yùn)到內(nèi)存上執(zhí)行。當(dāng)程序結(jié)束后,它所占用的內(nèi)存就被釋放,程序就被下載了。而在一個嵌入式系統(tǒng)里,可能沒有磁盤。有兩種途徑可以消除對磁盤的依賴,一是在一個簡單的系統(tǒng)里,當(dāng)系統(tǒng)啟動后,內(nèi)核和所有的應(yīng)用程序都存在內(nèi)存里。這是大多數(shù)傳統(tǒng)的嵌入式系統(tǒng)的工作模式,同樣Linux。第二種就是Linux所特有的功能,因?yàn)長inux已經(jīng)有能力“加載”和“卸載”程序,因此,一個嵌入式系統(tǒng)就可以利用它來節(jié)省內(nèi)存。一個比較典型的系統(tǒng)有大約8MB到16MB的閃存和8MBRAM,而閃存可以被用作文件系統(tǒng)。用閃存驅(qū)動程序作為從閃存到文件系統(tǒng)的界面就是一種選擇。當(dāng)然,也可以用一個閃存磁盤。用閃存來擺脫系統(tǒng)對一個磁盤的需求(依賴)具有DiskOnChip技術(shù)以及CompactFlash卡等方式。
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NCR 445-0714204 NID CONTROL BOARD Interior Dispenser
New EUCHNER NZ1RS-538L060-M 090555 Safety Switch
Lot of 10 CHUB Fishing LM4 Locator Distance Marker New
New EUCHNER NZ1RS-528-M 089627 safety switch
Credence LT1101 Voltage Supply Board 671-4014-04 Spare
Refurbished ALSTOM STF-DL ANTENNA Ref: 23509 Rev. E
HP Power Supply HP-D2201C0 220W
DELL STUDIO 1435 Motherboard Bottom base Heatsink
SIEMENS K-TP178 6AV6 640-0DA11-0AX0 TOUCH PANEL
DELL STUDIO 1536 Motherboard in Bottom base
DELL Latitude E6500 LCD Cover Hinge cables 0XX187
Multifunction RC R/C tester Graupner Order number 1965
NEC K2M Motherboard Mainboard 800MHZ NZ-8027160000
ILME CCPZ RN crimping tool 10-16-40A NEW IN BOX
YASKAWA SGDH-08AE-S servo drive 200V 750W 0.75KW
FESTO 161294 DZF-50-25-A-P-A Air Cylinder
cefla dental Floor Box Board Tiny 97660524 new 97660725
SHIMADEN PAC 36 PAC36P415 THYRISTOR Power Regulator new
Alcatel-Lucent O-24120G-A 3FE51185AB 7342 ISAM FTTU MDU
PICOS PUV300 Power Supply USV Module Hutschienenmontage
TSI IFA-300 Research Constant Temperature Anemometer
CUSA dissectron portable unit Ultrasonic Aspirator 230v
ERICSSON RFS-06004 IND2040842/2 TX RX
Lot 1000 LittelFuse CG2470LSNTR SURGE ARRESTER $0.25/pc
Blue Bamboo H50-1 POS Terminal Wire model New Surplus
SUN EN1SA SUNFIRE V210 1U Server 1.34G*2 8G 73G*2 LSI22
Sun PCI Dual Ultra320 SCSI 594-2387-01 SGXPCI2SCSILM32?0
SUN X4445A 595-7495-01 Quad GigaSwift Ether PCI-X Card
ALCATEL-LUCENT Mobile Wimax Base Station 9710 2.5G
Lot 1500 Wurth INDUCTORs POWER 10UH 1.45A SMD-74477310
SAUTER ACTUATOR 578785-01 for ALFA LAVAL
NMB-MAT 2810KL-04W-B10 70*70mm x 25mm cooling fan
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Compaq MP2800 Matsushita FAL3F12LHSC Fan 12V 0.27A
SAMSUNG SDN-550 Camera & AVENIR TV Zoom Len TZSA06072
Alcatel eZ32 3BA23265AB New e-Z32 board
Lot 1000 OKI Reed Switches ORD228VL-1013 New $0.12/pc
Refurbished SAV Microprocessor Control 876.11-360/60-40
ELECTRONICON Capacitor E62.D78-163E20 16.0UF
ELECTRONICON Capacitor E53.P59-253T20 25uF
STG-1 Rotor Blade for 80C2 High Pressure Turbine AsIs
STG-2 Rotor Blade for 80C2 High Pressure Turbine AsIs
Lot 20 Auto Fuses LITTELFUSE Maxifuse 30A 0299030.ZXNV
STG-1 Rotor Blade for 80C2 CPRSR Sold As Is
USSI N21260605 IN OUT Board Ansaldo
Lot 20 Auto Fuses LITTELFUSE Maxifuse 40A 0299040.ZXNV
GEARSHAFT SPUR for 80C2-D1F Gearbox Sold As Is
Lot 20 LITTELFUSE MINI FUSEHOLDERs IN-LINE OFHM0001Z
Adapter for 80C2-D1F Engine Generator Sold As Is
NEW OCTEL 250 4G DISK MODULE ASSY 044-2538-000 RevB6
Lot 20 LITTELFUSE Auto DIODE FUSEs 12135037
NEW OCTEL 250 CCF Board CP/FILE 044-2501-010 RevC
PARKER AR-04PE ARIES EPL 400W DRIVE Motion Controller
Motorola MC25 FR6874-LCQSQ0C Phone Barcode Scanner DVT
Aircraft 07482ASSY Sold As Is
EMC 2.2KW Power Supply 078-000-049 ACBEL API3SG06 220V
Aircraft Part TUBE F0301 340-130-401-0 FA9C4 Sold As Is
SAM ELECTRONICS DS05-IMB GE3044G205 Sonar Submarine
DMW284A Wartsila VASA 22 FUELNOZZLE UNCOOLED 8*0.36*150
SAM ELECTRONICS HS04-RSC10T GE3044G201 RSC Signal Card
SAM ELECTRONICS HS06-TCU NG3028G201 Board
SAM ELECTRONICS HS10 Pulse Modulator NG3028G206 25KW