To store and communicate information, it needs to be captured and stored in a binary format. The most basic unit for storing data is called a byte. Various sizes of information require hundreds, thousands or even billions of bytes. The size of the data impacts our need to find faster ways to send information.
- The more and more information you need to store,…the more bits you need to store it.…Data has a unit of measure just like distance.…You measure distance using inches, feet, yards, and miles.…And in metric you use meters, centimeters, and kilometers.…The prefixes that are used in metric like kilo…are also used to help measure the size of data.…Let's start with storage and size first.…We know that the smallest amount of storage is a single bit.…A single one or a zero off or on.…
We group these in sets of eight bits, which is called a byte…but what's smaller than a byte?…Well a nibble of course.…A nibble is half of a byte, or four bits.…The byte is the base form of measurement for data size.…The same as meters when we measure distance.…From this base size we can use prefixes to show magnitude…of size.…Measurement and data size is done by multiples of 1,000.…But not in the 1,000 that you're used to.…
Instead of 1,000, the number 1,024 is used.…Why?…Because 1,000 is decimal or uses a base ten number system.…Since we're talking about binary we need to use numbers…
This course is the first in our Computer Science Principles series, designed around the AP Computer Science Principles (CSP) curriculum. It is a great foundation for anyone, at any age, to prepare for careers in technology and computer science. Lessons in this segment cover the building blocks of computing: binary logic, number systems, text and image encoding, compression, and simple communication protocols. Understanding these basics will help you understand the interplay between hardware, software, data, networks, and the people that use them.
- Binary and bits
- Digital communication
- Number systems
- Encoding text
- Compressing text and images