What was the first high-speed, purely electronic, digital computer which could be programmed and re-programmed to handle a wide array of tasks?

The first high-speed, purely electronic, digital computer which could be programmed and re-programmed to handle a wide array of tasks is the ENIAC, which stood for Electronic Numerical Integrator and Calculator. The ENIAC can be reprogrammed by rearranging the patch cords built in the system and the settings of 3,000 switches. This was used mostly for the war.