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{{Memory types}}
{{short description|Type of solid state computer memory that becomes read only after being written once}}
A '''programmable read-only memory''' ('''PROM''') is a form of digital memory where the contents can be changed once after manufacture of the device. The data is then permanent and cannot be changed. It is one type of [[read-only memory]] (ROM). PROMs are usually used in digital electronic devices to store low level programs such as [[firmware]] or [[microcode]]. PROMs may be used during development of a system that will ultimately be converted to ROMs in a mass produced version. These types of memories are used in [[microcontroller]]s, [[video game console]]s, mobile phones, radio-frequency identification ([[RFID]]) tags, implantable medical devices, high-definition multimedia interfaces ([[HDMI]]), and in many other consumer and automotive products.
PROMs are manufactured blank and, depending on the technology, can be programmed at the wafer, final test, or
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