Comp conn 3 bits and bytes
- 1. Computer Connections: Lesson 3 - Bits & Bytes
- 2. Did you know… • All information that travels through your computer is based on two commands?
- 3. On or Off • The only data a computer can understand is on and off. • But, the millions of combinations of those two commands given in series are what make a computer work.
- 4. Huh?!? • Remember the power supply that is inside your computer and how it sends electricity to all of the components? • That electricity is what creates an on signal.
- 5. bits • The memory chips inside your computer are divided into thousands of tiny compartments called bits. • Each bit has an electronic switch or gate. – On (1) = gate is open and letting electricity go through. – Off (0) = gate is closed gates because the electricity is blocked and cannot get through.
- 6. Binary Code • Data is formed by grouping the bits together to form a series of 1/0. • Eight bits are grouped together to form a byte. • The grouping of 1/0 within a byte is called Binary Code. In this group of eight, there are 256 possible combinations of 1/0.
- 7. How Binary Code Works: • type the letter A on your keyboard • electrical signals are sent from the keyboard to the CPU. • The CPU processes the signals and turns it into binary code. • The computer reads the binary code and sends it to the monitor to display the letter A.
- 8. B, KB, MB & GB • You may have seen these abbreviations many times before. • Do you know what they mean? 8 bits = 1 byte (B) 1,000 B = 1 Kilobyte (KB) 1,000 KB = 1 Megabyte (MB) 1,000 MB = 1 Gigabyte (GB) 1,000 GB = 1 Terabyte (TB)
- 9. Memory • Memory/Storage capacity is measured in Bytes. • Ex: 15GB hard drive = the hard drive has the capacity to store 15 billion bytes.
Editor's Notes
- #7: In this group of eight, there are 256 possible combinations of 1/0 .