memory circuits

Summary

Random access memory(RAM)

• static RAM -> use flip-flops
• dynamic RAM -> use capacitor charges

Memory unit

• combined in an array to form larger units

Memory arrays

• uses a decoder on the more significant bits of the address to index the appropriate cell for the next level

Concept

States

• each flip-flop is responsible for 1 bit

Memory properties

• compromise between
  • fast excess
  • large capacity
  • economical cost
  • non-volatile

Data transfer

• how the CPU indexes and reads from/writes to memory