here are some facts.
nes and stores just would not accept a new video game system from Nintendo cause of the crash. so Nintendo made a robot toy up and got there system into it how Nintendo stop the crash of the video game market.
Sega joins in and takes some of Nintendo audience away. Sega was the first company to acutally do blood gore games Nintendo took it out.
Atari stop making systems and now does games.
Nintendo and sony try to team up to make snes/cd game but how bad Sega fail Nintendo back out and went to a differ company and back out of them and stick with cartridges.
Nintendo had been trying online with the nes in japan and in the usa but they just couldn't get anything.
Sony enters the market with snes for a short time and than they make ps1 and hurt Nintendo in long run with the n64 still on cartridges.
Nintendo tried to sue sony over the playstation name Nintendo saying it was there but fail to prove it. sony won
Ps2 won cause of some bad hardware and get third party support.
Gamecube was thrid place but got better third party support than n64
Xbox joins into try to destory sony. MS owns xbox/xbox360 where the online acutally comes to live here.
though they were not the first to do it Online started with dream cast but Sega just did not do well it was way ahaed of its time.
nes- d-pad invited and protected by nintendo
n64- control-stick/anagole stick new and work well not the same as joy stick but simliar
Wii- motion controller
Ps3- tilit sensor the gbc had
Gamecube and xbox were more powerful than ps2. Now this current gen its
Ps3
Xbox 360
Wii
welcome to my video game knowledge
handhelds
Game boy - no color just black and white hand can go out for amount of time with battery
Game boy color- color and maybe smaller cartridges more battery power or be able to charge it.
Game boy advance- just better shape screen protected almost back light added. charging for a longer trip out of the house
PlayStation portable- first handheld to use angaole stick first to use mim disc on the move first to used a memory stick. and hardware and grapchis better than ds.
Daul screen aka

s/ds Smallest cartridges you wil lever see in life wifi game boy adavance at first back words capability touch screen you play the game and touch it on the bottom screen to beat the game.
Once the ligte came out gba die pretty much. and nintendo still owns sony in handheld market.