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Michael Allen Wingfield Papers, 1969-1982

Owning Institution: UCLA, Kleinrock Internet History Center

About this Collection

In June of 1969, Michael Allen Wingfield, an engineering graduate student, was asked by Steve Crocker at UCLA to design the hardware interface between the Scientific Data Systems (SDS) Sigma 7 computer and an Interface Message Processor (IMP) from Bolt, Beranek and Newman (BBN) to connect the UCLA system as the first node on the Advanced Research Projects Agency Network (ARPANET), the precursor to the internet. After reviewing the BBN 1822 IMP interface specification, Wingfield drew up flow charts, logic diagrams, and a test program for the IMP when it was received from BBN in September 1969. He also implemented Transmission Control Protocol/Internet Protocol (TCP/IP) for Unix, a family of multiuser computer operating systems in 1979. His papers detail the design specifications of the IMP for ARPANET and the TCP/IP source code for UNIX, and include: handwritten notes, manuals, specifications, computer printouts, and photographs. View this collection on the contributor's website.
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32 items found in this collection

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IMP-Host Interface Logic Diagrams (A series)
IMP-Host Interface Logic Diagrams (B series)
IMP-Host Interface Timing [1] CPU Order Logic
IMP-Host Interface Timing [10] Specifications for Gore-SDS Cable Connector
IMP-Host Interface Timing [11] Control Panel Wiring Specifications
IMP-Host Interface Timing [12] Hardware Specifications
IMP-Host Interface Timing [13] Computer Board Indexing Slots
IMP-Host Interface Timing [14] Logic Diagrams
IMP-Host Interface Timing [2] IMP to Host
IMP-Host Interface Timing [3] Host to IMP
IMP-Host Interface Timing [4] Miscellaneous Indicator Lamps
IMP-Host Interface Timing [5] Diagonostic Logic Equations
IMP-Host Interface Timing [6] IMP Test program
IMP-Host Interface Timing [7] I.C. Count
IMP-Host Interface Timing [8] RFC 12 IMP-HOST INTERFACE FLOW DIAGRAMS
IMP-Host Interface Timing [9] Project Network Diagram Interface Construction
Interface Message Processor Image 001
Interface Message Processor Image 002
Interface Message Processor Image 003
Source Code First TCP/IP For Unix [1] tscpstru.h
Source Code First TCP/IP For Unix [10] tcplib.c
Source Code First TCP/IP For Unix [11] tcpuser.c
Source Code First TCP/IP For Unix [12] ftpserv.c
Source Code First TCP/IP For Unix [13] send.c
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