The ` ` world 's oldest original working digital computer '' underwent a reboot . The WITCH is now operational at a museum in the UK . The WITCH , by contrast , features walls of dekatron valves , which are little light-bulb-looking things . The computer , created for atomic research , was upgraded over the years . It has the computing capabilities of ` ` a man with a pocket calculator ''
The ` ` world 's oldest original working digital computer '' underwent a reboot . The WITCH is now operational at a museum in the UK . The computer , created for atomic research , was upgraded over the years . It has the computing capabilities of ` ` a man with a pocket calculator ''