1717国产精品久久,高清乱码一卡二卡,国产成人综合亚洲网站,美女午夜福利4k视频在线观看,欧美人与禽zzz0交酡免费下载

MRO New

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

Components

Your list is empty

Please upload or create a BOM first

Create BOM Upload BOM

DRAMs:

0 results

動態(tài)隨機存取存儲器（Dynamic Random Access Memory，DRAM）是一種半導(dǎo)體存儲器，主要的作用原理是利用電容內(nèi)存儲電荷的多寡來代表一個二進制比特（bit）是1還是0。由于在現(xiàn)實中晶體管會有漏電電流的現(xiàn)象，導(dǎo)致電容上所存儲的電荷數(shù)量并不足以正確的判別數(shù)據(jù)，而導(dǎo)致數(shù)據(jù)毀損。因此對于DRAM來說，周期性地充電是一個無可避免的要件。由于這種需要定時刷新的特性，因此被稱為“動態(tài)”存儲器。相對來說，靜態(tài)存儲器（SRAM）只要存入數(shù)據(jù)后，縱使不刷新也不會丟失記憶。