Electronics Introduction

  In microprocessor systems,   RAM (Random Access Memory)   and   ROM (Read-Only Memory)   serve different purposes and have distinct characteristics. Here’s a breakdown of their key differences: 1. Function & Usage RAM ROM Temporary, volatile memory (loses data when power is off) Permanent, non-volatile memory (retains data without power) Used for  active data processing  (running programs, OS, temporary storage) Used for  storing firmware, BIOS, bootloaders , and fixed data Read & write operations allowed Typically  read-only  (some types allow limited writing) 2. Speed & Performance RAM ROM Faster  (nanosecond access time) Slower  (microsecond access time) Optimized for frequent read/write operations Optimized for stability and long-term storage Used as  primary memory  (directly accessed by CPU) Used as  secondary/firmware memory 3. Types RAM Types ROM Types -  DRAM  (Dynamic RAM, needs...

  The   Raspberry Pi 's memory (RAM) cannot be physically upgraded   because it is   soldered directly onto the board   and not user-replaceable. However, there are a few   workarounds and alternatives   to improve performance when dealing with memory limitations. Here’s what you can do: 1. Use a Raspberry Pi Model with More RAM Different Pi models come with varying RAM capacities: Raspberry Pi 5 : Up to  8GB Raspberry Pi 4 :  2GB, 4GB, or 8GB  variants Raspberry Pi 3/Zero 2 W :  1GB Raspberry Pi Zero /1 :  512MB or 256MB Solution : If you need more RAM, consider upgrading to a higher-end Pi model. 2. Optimize Software to Reduce Memory Usage Use a Lightweight OS  (e.g.,  Raspberry Pi OS Lite  instead of Desktop). Close Unnecessary Background Processes : bash sudo systemctl disable [ unnecessary-service ] Use Swap Space (ZRAM or Swapfile) ZRAM  (compressed RAM swap, better for performance): bash sudo apt i...