computer hardware, electronic components, consumer electronics  

Manufacturers : Computers : Computer memory : Read-only memory

Computer memories are generally classified into volatile memories and non-volatile memories based on whether stored data is retained even at power-off. Volatile memories include dynamic random access memory (DRAM) and static random access memory (SRAM). Non-volatile memories include read only memory (ROM)  and flash memory. A read only memory consists of a memory array of programmed data and a decoder to select the data located at a desired address in the memory array. Three basic types of ROMs are mask-programmable ROMs, erasable programmable ROMs (EPROMs) and field-programmable ROMs (PROMs). Read-only memory can retain data as disconnected from power supply and is therefore used to store permanent data, such as booting data of computer systems. In a computer system, hardware identifier or system configuration information is often stored in a read-only memory (ROM) device and sometimes in a serial ROM (SROM).

Listings on Computers : Computer memory : Read-only memory

  • Asahi Kasei Microsystems
    Produces electrically erasable read-only memory, telecommunication and mobile communication products, digital video encoders, AV receivers, mobile phone, multimedia audio, set-top box, digital TV, and USB products. Japan.
  • Atmel Corporation
    Manufacturer of EPROM, flash memory, parallel EEPROM, serial EEPROM, serial flash, stacked modules, microcontrollers, field programmable gate array, FPGA configuration memory, communication ICs, security and smart card ICs, DVD/CD storage chipsets, and network storage products.
  • DataFab Systems Inc.
    Designs, manufactures, and markets a variety of portable systems for hard disks (CD-ROM, CD-RW, and DVD) and flash memory cards, in various interfaces including USB 1.1/2.0, FireWire, PCMCIA, CF and Parallel Port. Product lines include flash card reader/writer, CarBus/CompactFlash/PCMCIA adapter, OTG enclosure, digital TV broadcasting, and flash drives. Taiwan, China.
  • Renesas Technology Corp.
    Manufacturer of flash cards, SRAM, EEPROM, bluetooth LSI, micrococontrollers, microprocessors, X-mobile card, system on chip, USB device, LCD driver/controller, standard IC, diodes, power MOSFETs, thyristors, triacs, and transistors.

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2009 Electronics manufacturers directory • (Read-only memory section) • Site map