What is a robot ,barcode reader, expansion slots, motherboard, system unit ,ram, rom, processor, arithmetic and logic unit

A robot is a machine capable of carrying out complex orders.

A barcode reader is a device that reads barcodes, which can be found on most brick-and-mortar store products.

I don't know what you mean by expansion slots.

A motherboard is a device that houses your RAM, your CPU, and your GPU. It also does other things as well, but those are the most important.

For the system unit, I'm going to assume you mean the case. The case is what holds the motherboard and the power supply. It also stores slots for additions, such as CD readers and thermometers (the thermometers are used to make sure that the computer doesn't overheat)

RAM, or random access memory, is temporary storage that gets dumped. It's used for programs that are currently running.

ROM is read-only memory, used mostly in video game cartridges. It can only be modified slowly, or sometimes not at all.

A processor is what processes information. They have cores, and the cores have threads, but explaining that would take a while.

I don't know the others, though.

okay, so i know we just goofed around in that chat, but ive been like genuinly depressed, like medically depressed for almost 4 years now. i had my first panic attack when i was 8. i woke my mum up and told her i felt like i was in a dream. like i was a goldfish in a bowl, looking at all these things going on around me and feeling . tiny. wort hless. and i now am now 17 y/o. i still feel those emotions daily. life used to go by so quick.like every day i would wake up and just like want to go back to bed cause i always felt like i was in the wrong place. i guess looking back, i was in the wrong state of mind. i took a expensive like nice trip to whyoming with my grandfather and ha ted it. like idk why. i would have loved it now, but i found myself writing in a journal everyday because i would forget what happened the day before, couldnt remember what i ate for like the previous meal. just my memory left me for the week i was there. worst feeling ive ever experienced.