The interactive exhibit included a desktop computer, a giant monitor, a 25-foot keyboard, and a 40-inch diameter trackball (initially planned to be a "bumper-car sized mouse") used by visitors to control the World Traveler program. In the Software Theater, animation and hardware video is used alongside a video feed of the World Traveler Program to show how computer programs work. This exhibit was closed on August 5, 1995, and re-opened as the Walk-Through Computer 2000 on October 21, 1995, to include an updated monitor, 3D graphics, and more interactive features. One of these features allowed visitors to change the pits imprinted on a giant CD-ROM, and the changes are seen on a monitor. Fellows The CHM Fellows are men and women 'whose ideas have changed the world [and] affected nearly every human alive today'. The first fellow was Rear Admiral Grace Hopper in 1987. The fellows program has grown to 92 members as of 2022. See also Vintage Computer Festival held annually at The Computer History Museum Computer museums History of computing History of computer science Living Computers: Museum + Labs Notes References Further reading Bell, Gordon (2011). Out of a Closet: The Early Years of the Computer [x]* Museum. Microsoft Technical Report MSR-TR-2011-44. External links The Computer Museum Archive Museums established in 1996 Buildings and structures in Mountain View, California Computer museums in California Museums in Santa Clara County, California 1996 establishments in California History of Silicon Valley Oral history