Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to understand computers [title] Decide what you need the computer for. [step] There are different kinds of computers you could buy : [substeps] Desktop computer: has a computer tower, and a separate monitor. More wires, and size, built for home use.

Ending1: Large size computers: have programmers on desks who design and use computers. External hard drives are usually found in the back of a computer. Ending2: If you are using a computer at home for just checking email, or typing documents, and don't need a lot of portability, then you should go for a desktop. If you don't customize and upgrade your desktop, an all-in-one desktop would do as well. Ending3: Mac: has an external operating system on it. Laptop cpu: has a glass or ceramic front to cover the firewall. Ending4: Desktop desktop model (fx): it can either be portable or use wireless. Desktop desktop png: it has an external hard drive built in.

Answer format: ending1/ending2/ending3/ending4