Here’s an interesting two-part series of posts by Ken Shirriff detailing the IBM mainframe tube module. Part 1 discuss the tube modules and describe the IBM 705 that used this module. Part 2 covers powering up the module and getting it to work. Read the full post at Ken Shirriff’ blog.
Ken Shirriff did an in-depth write-up of the punched card sorter: Punched card sorters were a key part of data processing from 1890 until the 1970s, used for accounting, inventory, payroll and many other tasks. This article looks inside sorters, showing the fascinating electromechanical and vacuum tube circuits used for data processing in the pre-computer […]
As detailed in this report, IBM has announced their first graphene integrated circuit. Graphene’s structure of one-atom-thick planar sheets of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice make it one of the thinnest semiconductor materials. Further development using graphene should open the door to greater practicality of flexible electronics. While […]