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Electrical, Automated And Cables

Switches

Automation Control
Switches
Automation Control
Hvac Fans Thermal Management
Hvac Fans Thermal Management
Cables

Fuses Circuit Breakers
Cables
Fuses Circuit Breakers
Lighting

Relays And Signal
Lighting
Relays And Signal
Enclosures Server Racks
Enclosures Server Racks

Mechanical Products And Tools

IT, Testing And Security Equipment

Personal Protective

Site Safety
Personal Protective
Site Safety
Office

Security Ironmongery
Office
Security Ironmongery
Test Measurement

PC Peripherals
Test Measurement
PC Peripherals
Facilities Cleaning Maintenance
Facilities Cleaning Maintenance

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MASK ROMs:

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MASK ROM：是制造商為了要大量生產(chǎn)，事先制作一顆有原始數(shù)據(jù)的ROM或EPROM當(dāng)作樣本，然后再大量生產(chǎn)與樣本一樣的 ROM，這一種做為大量生產(chǎn)的ROM樣本就是MASK ROM，而燒錄在MASK ROM中的資料永遠(yuǎn)無(wú)法做修改。