Hardware and Software

Beginner · 10 min

The body and mind analogy

If we compare a device to a person, hardware is the body and software the mind. Hardware is everything you can pick up: screen, battery, camera, processor, speaker, keyboard. Software is the sets of instructions telling those parts what to do: the photo app tells the camera "shoot now", the music app sends sound to the speaker. Hardware without software is a motionless box; software without hardware has nowhere to run. In every device the two work together, and every problem you experience arises in one of them — or in the communication between them.

Examples from daily life

Think of your phone: the screen, battery, cameras and all the chips in the case are hardware. The system you see at start-up, the messaging app you use, games and the keyboard app are software. The same split applies to a computer: the case, monitor and mouse are hardware; the word processor and the browser are software. There are in-between cases too: a printer is hardware, but for the computer to talk to it, a small piece of software called a driver is needed. When a new device is "not recognised", the problem is usually not physical but this missing go-between software.

There is a third layer as well: the small programs that ship with hardware, embedded inside it. From your television remote to your washing machine's programmes, many devices run software placed there by the manufacturer and usually never noticed. It is what makes "smart" devices smart: an updatable software layer added inside the hardware. That is why a modern car or television now receives software updates just as a phone does — and why some problems assumed to be "a broken remote" are actually cured by a small software reset.

Which side is the problem on?

Precise diagnosis takes expertise, but rough orientation is something anyone can do. These clues help: Is the problem confined to a single app? Probably software. Does the device not turn on at all, does the screen show lines, is the battery swollen? Probably hardware. Does a restart fix it? Very likely software — because restarting clears the software's tangled temporary state but changes nothing physical. That is why "have you tried turning it off and on again?" is not a joke: it is the first step that genuinely resolves a large share of software problems.

Why updates exist

Hardware stays as it left the factory; software is a living product. Updates carry three things: bug fixes, security patches and new features. The most important are the security patches: discovered vulnerabilities are closed by them, and a device that is not updated leaves known holes open. Endlessly postponing updates is therefore not a preference but a risk. The practical approach: rather than dismissing the update notice for days, let it install on an evening when the device is charging and idle. This topic deepens in the operating system lesson.