What is firmware?

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What is firmware?

Post by ashu4261 on Wed Jan 15, 2014 6:23 pm

Firmware is a combination of software and hardware. Computer chips that have data or programs recorded on them are firmware. These chips commonly include the following:

ROMs (read-only memory)
PROMs (programmable read-only memory)
EPROMs (erasable programmable read-only memory)
Firmware in PROM or EPROM is designed to be updated if necessary through a software update.

You can download firmware updates for many Apple products from Apple Downloads. There, you can search for a particular product's update by entering the product's name and the word "firmware" in the search box. Some Apple products that have had firmware updates include:

MacBook Air
MacBook Pro
Mac mini

Open Firmware
Open Firmware is the generic name of firmware complying with IEEE Standard 1275-1994. Among Open Firmware's many features, it provides a computer independent device interface - usually for PCI or AGP cards. This enables expansion card manufacturers to easily support several different computer designs without supplying different firmware for each one.
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