Unit Summary:
Data is raw, unprocessed facts; Information is data that has been organized and made meaningful.
Computers use data to run tasks, and convert it into information to help users understand and make decisions.
Computer memory is where data and instructions are stored so the computer can function properly.
Primary memory includes:
RAM (temporary, volatile memory used while working)
ROM (permanent memory storing essential instructions)
Secondary memory (like hard drives, SSDs, and pen drives) stores data long-term and is non-volatile.
Cache memory is very fast and stores frequently used data to boost computer speed.
Memory is measured in units from bits and bytes to yottabytes, depending on size.
Cloud storage allows saving and accessing files on the internet instead of on local devices.
It offers benefits like easy access, flexibility, cost savings, security, and backups.
A computer system consists of hardware (physical parts) and software (programs and apps).
The Operating System (OS) connects hardware and software, manages tasks, ensures security, and enables user interaction.
