IB Computer Science Basics Overview

What is the name of the storage units in computer memory?

• Bytes

• Bits

• Digits

• Memory Unit (MU)

How many bits create a byte?

• 32 bits

• 64 bits

• 8 bits

• 4 bits

What isn’t an example of a main hardware component?

• CPU

• Memory

• Peripheral Devices

• Software

How many bites is a Yottabyte

• 2^80 = 10^24 bytes

• 1024 bytes

• 1024 Zettabytes

• 10,000 Megabytes

Is a File hardware?

• True, it is a physical component on the computer to store info.

• False, it is a software concept to store computational info.

How are numbers and characters represented in computer memory?

• A series of on and off switches.

• 101010101

• Binary Number System

• Arabic Number and Latin Alphabet Systems

What is the main function of a CPU?

• Loads programs into RAM from secondary storage and runs them.

• Establishes and maintains file systems in storage.

• To interpret and execute computer programs, or sequences of instructions stored in the memory.

• Writes computer software.

What provides input and output in computer systems?

• CPU

• Peripherals

• RAM

• Hard Disk Drive

Transistors in the CPU only recognize two states of a signal, which are

• green or red

• good or bad

• 1 or 0, on or off, true or false

• correct or incorrect

What is the part of the memory that is non-erasable?

• RAM (random access memory)

• ROM (read only memory)

• Hard Drive

• Flash Drive