Which of the following is a computer memory that can be programmed once, but not reprogrammed.

The correct answer is C. PROM.

• ROM (Read-Only Memory) is a type of computer memory that can be read but not written to. It is used to store permanent data, such as the BIOS (Basic Input/Output System).
• RAM (Random-Access Memory) is a type of computer memory that can be both read and written to. It is used to store temporary data, such as the operating system and applications that are currently running.
• PROM (Programmable Read-Only Memory) is a type of computer memory that can be programmed once, but not reprogrammed. It is used to store data that needs to be changed infrequently, such as the configuration settings for a device.
• EPROM (Erasable Programmable Read-Only Memory) is a type of computer memory that can be erased and programmed multiple times. It is used to store data that needs to be changed frequently, such as the firmware for a device.

PROM is a type of computer memory that can be programmed once, but not reprogrammed. It is used to store data that needs to be changed infrequently, such as the configuration settings for a device. PROM is made up of a matrix of transistors, each of which can be programmed to be either a 1 or a 0. To program a PROM, a special device called a PROM programmer is used to apply a voltage to the appropriate transistors. Once a PROM has been programmed, it cannot be erased or reprogrammed.