Social networking

Social networking sites and applications have become increasingly popular in recent years. Facebook is typically used by people to connect with friends and family. It’s also possible to restrict access to posts at different levels – for instance, they can be seen by only friends of the user. Twitter is more public and people often “follow” people they don’t know. Instagram is similar to Twitter, but based on images.

File compression

Compression programs, additionally known as zip programs, reduce the dimensions of a file in a reversible manner. This allows them to be emailed and then uncompressed by the receiver. They can also be used to compress a folder of files, which can be particularly useful when emailing several photos.

 Apps 

The word “app” is short for “application”. It’s usually used to describe a program that runs on a smartphone. Apps can be 

used for all sorts of things, such as maps, counting the number of steps run, and taking photos with special effects.

File compression

Compression programs, also called zip programs, reduce the size of a file in a reversible way. This allows them to be emailed and then uncompressed by the receiver. They can also be used to compress a folder of files, which can be particularly useful when emailing several photos.

 

 Reversing the process

The same programs that compress files can also be used to uncompress them. Many computers return complete with compression software, which is additionally accessible on-line.