Read Only Memory (ROM): A Read Only Memory (ROM) is a device that includes both the decoder and the OR gates within a single IC package. The Fig. 3.82 shows…

EEPROM (Electrically Erasable Programmable Read Only Memory): Electrically Erasable Programmable Read Only Memory (EEPROM) also use MOS circuitry very similar to that of EPROM. Data is stored as charge or…

Erasable Programmable Read Only Memory (EPROM): Erasable Programmable Read Only Memory (EPROM) use MOS circuitry. They store 1s and 0s as a packet of charge in a buried layer of…

Programmable Read Only Memory (PROM): Fig. 3.71 shows four byte Programmable Read Only Memory (PROM). It has diodes in every bit position; therefore, the output is initially all 0s. Each…