Editing Microvision (section)

===ESD damage===
A major design problem on early units involves the fact that the [[microprocessor]] (which is inside the top of each cartridge) lacks [[Electrostatic discharge|ESD]] protection and is directly connected to the copper pins which normally connect the cartridge to the Microvision unit. If the user opens the protective sliding door that covers the pins, the processor can be exposed to any [[Static electricity|electric charge]] the user has built up. If the user has built up a substantial charge, the discharge can jump around the door's edge or pass through the door itself ([[dielectric breakdown]]). The low-voltage [[integrated circuit]] inside the cartridge is extremely ESD sensitive, and can be destroyed by an event of only a few dozen volts which cannot even be felt by the person, delivering a fatal shock to the game unit. This phenomenon was described in detail by [[John Elder Robison]] (a former Milton Bradley engineer) in his book ''[[Look Me in the Eye]]''; Robinson described the issue as having been a significant enough issue during the 1979 holiday season (with up to 60% of units being returned as defective) that it resulted in significant panic among Milton Bradley staff and required extensive modifications to both later Microvision units and Microvision factories (the former being of his own design) to better dispel stray static charges.<ref name="Robinson">{{cite book |last1=Robinson |first1=John Elder |title=Look Me in the Eye |date=25 September 2007 |publisher=Three Rivers Press |isbn=978-0-307-39598-6 |pages=[https://archive.org/details/lookmeineyemyl00robi/page/197 197-203] |language=en |chapter=Chapter 21: Being Young Executives |chapter-url=https://archive.org/details/lookmeineyemyl00robi/page/197 }}</ref>