Hardware

Hardware

1. CPU

   • Boot sequence is the initial set of operations that are performed when the computer is
   • Fetch-execute cycle - Fetches the instruction, decodes the instruction and executes the instruction.
   • Cache Memory, also called CPU Memory is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM
   • A Multi-core processor is an integrated circuit to which two or more processors have been attached for enhanced performance, reduced power consumption, and more efficient simultaneous processing of multiple tasks
   • Clock speed is the operating speed of a computer and is measured in GHz

2. Memory

   • Random Access Memory vs Read Only Memory
     • Random Access Memory is a form of data storage that can be accessed randomly at any time, in any order and from any physical location. Allowing quick access and manipulation
       • RAM allows the computer to read data quickly to run applications. It allows reading and writing
         • ROM stores the program required to initially boot the computer. It only allows reading.
     • Read-only memory or ROM is also a form of data storage that can not be easily altered or reprogrammed. Stores instructions that are not necessary for re-booting up to make the computer operate when it is switched off.They are hardwired.
     • RAM is volatile i.e Its contents are lost when the device
       • ROM is non-volatile i.e its contents are retained even when the device is powered off.