--- title: Inventions, computers and the internet — a lesson of Mova's school · trees and pragmatics description: «Inventions, computers and the internet», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: An invention is a new thing or a new way of doing something that solves a problem. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Inventions, computers and the internet # Inventions, computers and the internet Lesson 59 of the world course of Mova's primary school: 23 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/59-inventions-computers-internet/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/0/) — An invention is a new thing or a new way of doing something that solves a problem. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/1/) — Inventors build on earlier ideas: the bicycle needed the wheel, and the car needed both the wheel and the engine. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/2/) — Some inventions changed how people share knowledge. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/3/) — The printing press made books cheap, so many more people could learn to read; the telephone and the radio carried voices far away almost instantly. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/4/) — A computer is a machine that follows instructions called a program. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/6/) — The internet is a huge network that joins computers all over the world. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/7/) — A message is cut into many small packets, each labelled with the address it must reach. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/8/) — The packets travel through cables, through glass fibres as flashes of light, and through the air as radio waves, passing from one router to the next. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/9/) — At the end, the receiving computer puts the packets back together in the right order. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/10/) — A website is stored on a computer called a server, and your device asks the server for it. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/11/) — Messages can be copied and passed on, so think before you share anything online. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/13/) — Most inventions are built on earlier inventions and ideas. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/14/) — The printing press made books cheaper and helped knowledge spread. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/15/) — A computer follows a list of instructions called a program. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/16/) — A computer stores letters, pictures and sounds as numbers made of 0s and 1s. - [17](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/17/) — The internet is a network that joins computers around the world. - [18](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/18/) — Messages on the internet are split into small packets, each with an address. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/19/) — Packets travel through metal cables, glass fibres and radio waves. - [20](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/20/) — Fibre-optic cables carry information as flashes of light. - [21](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/21/) — A router is a machine that passes packets on towards their address; if one path is broken, routers send the packets another way. - [22](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/22/) — Wi-Fi and mobile phones send information through the air as radio waves. - [23](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/23/) — A website is stored on a computer called a server. - [24](https://md.mova.elamur.ai/free/en/corpora/school/world/59-inventions-computers-internet/24/) — Anything posted online can be copied and kept by others, so personal details should stay private. - ← previous: [People and society — communities, work, money and rules](https://md.mova.elamur.ai/free/en/corpora/school/world/58-people-and-society/) - next →: [Thinking it through — forces, heat, light and energy](https://md.mova.elamur.ai/free/en/corpora/school/world/60-reasoning-energy-technology/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)