Instant RFQ

Guaranteed quotes back within 15 minutes, 24/7 x 365


View More

Top Computer Memory Part Types List

View All

Memory in a computer is the hardware integrated circuits that store information for immediate use in a computer. However, most forms of memory are temporary, meant to be written and rewritten over, and do not save data permanently. This means that if there is an outage of power, the data is lost.

Volatile memory

Volatile memory is a type of computer memory that requires power to maintain stored information. If the power is interrupted, the data is lost. Volatile memory is used for several different purposes, including primary storage, which is faster to access than mass storage like a hard disk drive.


Random-access memory (RAM) was first invented in the 1970s to store data and machine code currently being used by a computer. RAM allows data to be read or written in almost the same time regardless of the physical location of data inside the memory. RAMs greatest advantage is that it does not suffer from mechanical limitations like media rotation speeds or arm movement the way that hard disks or CDs do.


Dynamic Random-Access Memory (DRAM) is a type of memory used for data or program code that a processor needs to function. DRAM uses pairs of one transistor and one capacitor, storing one bit in each pair, and is found in PCs, workstations, and servers. Random access allows the PC processor to access any part of the memory directly rather than having to proceed sequentially from a starting place. DRAMs biggest drawback is that it requires a new electronic charge every few milliseconds to compensate for leaking charge from the capacitor. DRAM is simple to design, fast, and low costing compared to other types of memory. However, it is volatile and consumes a lot of power.


Static Random-Access Memory (SRAM) uses a cell of six transistors in a cross-coupled flip-flop configuration. SRAM’s biggest advantage over DRAM is that it retains data bits for as long as power is being supplied and does not need to be periodically refreshed. It is faster but more expensive than DRAM and is used primarily for cache memory.

Non-volatile memory

A type of computer memory that can retrieve stored information even after power has been cycled. Non-volatile memory comes in electrically addressed systems (read-only memory) and mechanically addressed systems like hard disks, optical disks, and magnetic tape. Electrically addressed systems are expensive and have limited capacity, but are fast, while mechanically addressed systems are cheap, but slow.

Read-only memory (ROM)

ROM is used in computers and electronic devices. Data stored in ROM cannot be electronically modified, only read, after manufacture. ROM is useful for storing software that rarely changes during a system’s life, which is often called firmware. Firmware is usually the low-level control of a device’s hardware, like a TV remote’s controls.

Programmable read-only memory (PROM)

Invented in 1956, PROM is a form of digital memory where the setting of each bit is locked by a fuse or antifuse. The data in these bits is permanent and cannot be altered. PROM is used in digital electronic devices, usually to store low-level programs like firmware or microcode. The major difference between ROM and PROM is that ROM’s data is written during manufacture, while PROM’s data is written after manufacture.

Erasable programmable read-only memory (EPROM)

An array of floating gate transistors individually programmed by an electronic device; EPROM’s data can be erased by exposure to a strong ultraviolet light source. EPROM is distinguished by the transparent window of fused quartz on its package, through which the silicon chip is visible, which is what allows for exposure to the ultraviolet light.

Electrically erasable programmable read-only memory (EEPROM)

Non-volatile memory is used in computers, as well as in microcontrollers for smart cards and remote keyless systems, and other devices to store small amounts of data but allowing individual bytes to be erased and reprogrammed. Organized as arrays of floating-gate transistors, EEPROM can be programmed and erased in-circuit. However, EEPROM has a limited lifespan for erasing and reprogramming, up to one million operations in modern EEPROMs.

Flash memory

Solid-state non-volatile computer storage medium that can be electrically erased and reprogrammed. The greatest advantage flash memory has over EEPROM is that while EEPROM has to be erased and rewritten, flash memory can be written and read in blocks or pages. Found primarily in memory cards, USB flash drives, and solid-state drives.

At Aerospace Aces, owned and operated by ASAP Semiconductor, we sell computer memory from some of the top manufacturers around the world, including Cortelco, Atmel Corporation, and Cisco.

memory cards modules ddr2 bar code readers memory adapters
analog and digital phones memory expansion boards eeprom memory batteries
pwb memory refurbished memory ddr2 sdram video memory
heat sinks sound ics and semiconductors edo
ddr3 sdram hard drives rom pcba
nvram pcmcia audio products dram chip
power accesories card adapters smart memory sdram
usb flash drives pc card memory ddr sdram compact flash
edo ram flash drives ram modules flashcard readers
memory upgrades ram memory upgrades cpu pci
nand flash barebone systems dual ports psram
various memory backplanes integrated circuits memory modules
vram memory notebook memory fpga configuration smart cards
eprom video servers card readers memory card combo flash
multi chip package flash memory sram memory inline module sockets ddr
fpga memory ram miscellaneous graphic card uvprom memory ics
battery backed sram memory controllers dram controllers
cache flash memory memory accessories sodimm
logic memory main memory non volatile sram psd programming system devices
mram cards fifo memory pcb memory
fpm ram different voltage memory modules satellite radio accessories kits other other memory
fifos flash memory ics fifo memory ics fram
serial number registration computer memory cache memory memory cards
microprocessors boards other memory ddr3
otp memory ics drive io memory static ram sram ics
prom rom modules planar memory volatile memory
host memory uncategorized processors communication ras fax servers
memory pc cards combo memory rdram firmware
memory ram module dimm other memory controllers f ram
Semiconductor's Certifications and Memberships

Thank You for Visiting Aerospace Aces!

We Hope You'll Choose Us as Your Parts Distributor In the Future. Don’t forget That We offer Competitive Quotes and Same-Day Shipping On Most of Our Inventory.

Request for Quote