10 questions · Technology
All about Computers & Internet: HTTP governs how browsers and web servers exchange data. Its secure variant 'HTTPS' encrypts that transfer. HTML is the markup language used to build web pages. With 'tags' it defines what is a heading, paragraph, image or link. A byte of eight bits can represent 256 different values: enough for one character. Larger units are kilobyte, megabyte, gigabyte. Linus Torvalds released the Linux kernel as free software in 1991. Today it runs most servers, supercomputers and (as Android) billions of smartphones. The @ sign separates the user name from the domain in an email address (name@domain). Ray Tomlinson chose it in 1971 for the first email. Good to know: The little padlock icon in your browser stands for such an encrypted HTTPS connection. HTML describes only the structure: the appearance comes from CSS. 'Byte' was deliberately spelled that way (not 'bite') to avoid confusion with 'bit'. The Linux mascot is a penguin named 'Tux'. In German it is colloquially called 'Klammeraffe' (spider monkey).
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HyperText Transfer Protocol
HTTP governs how browsers and web servers exchange data. Its secure variant 'HTTPS' encrypts that transfer.
💡 Did you know? The little padlock icon in your browser stands for such an encrypted HTTPS connection.
HyperText Markup Language
HTML is the markup language used to build web pages. With 'tags' it defines what is a heading, paragraph, image or link.
💡 Did you know? HTML describes only the structure: the appearance comes from CSS.
eight
A byte of eight bits can represent 256 different values: enough for one character. Larger units are kilobyte, megabyte, gigabyte.
💡 Did you know? 'Byte' was deliberately spelled that way (not 'bite') to avoid confusion with 'bit'.
Linux
Linus Torvalds released the Linux kernel as free software in 1991. Today it runs most servers, supercomputers and (as Android) billions of smartphones.
💡 Did you know? The Linux mascot is a penguin named 'Tux'.
At
The @ sign separates the user name from the domain in an email address (name@domain). Ray Tomlinson chose it in 1971 for the first email.
💡 Did you know? In German it is colloquially called 'Klammeraffe' (spider monkey).
Central Processing Unit
The CPU is the processor: the computer's calculation centre, which executes instructions. Its speed is measured in gigahertz, among other things.
💡 Did you know? Modern CPUs bundle several 'cores' to handle tasks simultaneously.
Apple
Apple unveiled the first iPhone in 2007, ushering in the era of touchscreen smartphones. The company has at times been the most valuable in the world.
💡 Did you know? Steve Jobs presented it as 'three devices in one': a phone, an iPod and an internet device.
Bill Gates
Gates founded Microsoft in 1975 with Paul Allen. With the Windows operating system it became the dominant software company and Gates for years the richest person in the world.
💡 Did you know? Today he puts much of his fortune into charitable foundation work.
transistors double about every two years
In 1965 Gordon Moore observed that the number of transistors on a chip roughly doubles every two years. This explains why computers became rapidly faster and cheaper for decades.
💡 Did you know? It is not a law of nature but an observation and is now hitting physical limits.
Artificial Intelligence
AI refers to systems that solve tasks otherwise requiring human intelligence, such as understanding language or recognising images. Modern AI 'learns' from huge amounts of data.
💡 Did you know? The term was coined at a 1956 conference in Dartmouth.
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