Web developer Nathan Broadbent loved automating everyday tasks. He also loved frozen dinners and wanted to program his microwave to prepare them. He suspected an oven could take advantage of Universal Product Codes-----the bar codes found on almost all food packaging—to download and execute cooking instructions all by itself. “We’re at this point with technology that we have everything we need to make this possible, but no one's doing it” he says. To prove it, Broadbent took apart a 1990s-eramicrowave, studied its circuitry, and integrated a Raspberry Pi mini computer （and a custom circuit board） to hijack the oven's electronics. Next, he attached a Wi-Fi-adapter, a microphone, a speaker, and a barcode scanner. When the scanner identifies a food, the Pi downloads cooking instructions from an online database that Proadbent created and programs the oven to carry them out. The appliance even obeys voice commands （e.g., "Cook on high for two minutes"） and accepts instructions wirelessly via Internet-connected devices. When something finishes cooking, the oven doesn’t just beep—it speaks and can also update a Twitter account So now Broadbent can have his microwavable cake and tweeze it too. 
47.prepare his frozen dinners48.the microwave49.an online datebase that Proadbent created50.Internet -connected devices51.something finishes cooking
