Donald Edward Hopkins
				5819 Ruatan St.
			   Berwyn Heights, MD 20740
				(301) 474-8027
			      don@brillig.umd.edu


SOFTWARE SKILLS
    Window systems: NeWS, X-Windows, SunView, Lisp Machine, Xerox Star
	(Viewpoint), XDE, Software Express Videotex
    Forth: 6502 (Apple), Z80 (ZMob), 68000 (Sun), C (Sun, Vax), device
	drivers, terminal emulators, graphics, animation, porting large
	programs, extension language interfaces
    Networking: Local area networking, TCP/IP, RPC, NFS, electronic mail,
	Internet, Usenet, mailing list administration

PROGRAMMING LANGUAGES
    Forth, C, PostScript, Lisp, Logo, Macsyma, Prolog, OPS-5, 6502
    assembly, 6809 assembly, 68000 assembly, Z80 assembly, C-shell, Awk,
    LEX, YACC, Pascal, Fortran, Basic.

COMPUTERS / OPERATING SYSTEMS
    Apple ][+, //e, //c / DOS 3.3, UCSD Pascal, CP/M, ProDOS
    Apple MacIntosh / Mac OS; Apple LaserWriter
    Data General MV 10000 / System V Unix
    HP2000; HP3000 / MPE
    IBM-PC / MS-DOS; IBM-PC/AT / Xenix
    PDP-11/24 / RT-11; PDP-10 / ITS; PDP-20 / Twenex
    Pyramid / OSx (4.2BSD, System V Unix)
    Radio Shack TRS-80 Model I, Level I and II, Color Computer
    Sun-1, Sun-2, and Sun-3 Workstations / 4.1, 4.2BSD Unix
    Lisp Machine (LMI, Symbolics)
    VAX 11/750, 11/780, 11/785, 8600, MicroVax / 4.1, 4.2, and 4.3BSD Unix
    Xerox 8010 Workstation / Star, Viewpoint, XDE
    ZMOB Parallel Processor

WORK EXPERIENCE
    UNIVERSITY OF  MARYLAND HUMAN  COMPUTER INTERACTION LAB:  Presently working
    for Ben Shneiderman, on HyperTies, a graphics and hypertext browsing system
    for the Sun and IBM-PC.

    WEDGE  COMPUTER: Wrote  a  PostScript VT100  emulator for  the NeWS  window
    system, to be used with their version  of NeWS for  the MacIntosh.

    SUN MICROSYSTEMS: Replaced the user interface of CADroid,  Sun's schematics
    CAD system  for  computer  system  and  board  design.  Interfaced  a Forth
    language interpreter to CADroid, using the SunView window system.

    UNIVERSITY  OF MARYLAND COMPUTER SCIENCE  DEPARTMENT: Worked on the Systems
    Staff hacking Unix, Emacs,  Sun  and Xerox  workstations,  window  systems,
    networking,  electronic mail, operating  system  installation, support, and
    administration.

    SELFWARE:  Ported TypeRite, a  menu driven intelligent electric  typewriter
    program, from the IBM-PC to the Apple ][.  Translated  it from MS-DOS Forth
    to the ProDOS Forth environment that I implemented for the Apple.

    K.L. GINTER  AND  ASSOCIATES: Worked to  port the Software Express Videotex
    interface program, from the IBM-PC to the Apple //e.

    COMPUTER CHALLENGES: Implemented a Forth   programming environment for  the
    Apple ][ computer, including graphics and animation packages.

EDUCATION
    UNIVERSITY  OF MARYLAND,  COLLEGE  PARK: Bachelor  of   Science in Computer
    Science degree expected in Summer 1989.

PROFESSIONAL AFFILIATION
    Member, Association for Computing Machinery.
    Member, Usenix Association.

ACHIEVEMENTS
    Won first place in 1984 ACM  Capitol Regional  programming  contest at John
    Hopkins University,  on the  team representing  the University of Maryland.
    Went on to win fourth place in the International ACM Scholastic Programming
    Contest in New Orleans in March of 1985. Won a  trophy, an Apple Macintosh,
    a $1000 scholarship, and a $300 scholarship.

    Won third place in a preliminary  programming contest at  the University of
    Maryland  on September  7, 1985.   Went on to  the Drew University contest,
    winning third place, a $250 prize, and plaques.

    Participated in the ACM Capitol Regional programming contest at William and
    Mary College in 1986, winning third place, and the 1986 programming contest
    at George Mason College, winning fourth.

    Designed  and implemented "pie  menus", circular menus  based on direction,
    for X-Windows   and the NeWS window  systems.   Constructed a  Forth  based
    window manager, and used it to implement an  experiment comparing the speed
    and precision of circular pie menus versus linear pull down menus.

    Discussed my research of pie menus in a Work-in-Progress session at the
    1987 Summer Usenix Conference in Phoenix Arizona, the 1987 Usenix Graphics
    Workshop in Cambridge, Massachusetts, and the NeWS window system Special
    Interest Group at the Sun Users Group conference in San Jose California.

    Set up the NeWS-makers electronic mailing list,  which I currently maintain
    and moderate. NeWS-makers is distributed over the  Internet, as well as the
    Usenet news  group comp.window.news, and is  an open forum where NeWS users
    can exchange ideas and contribute software.

INTERESTS
    Computers, graphics, art, music, bicycling, communication, electronic mail,
    science fiction, Legos

PUBLICATIONS
    Directional Selection is Easy as Pie Menus!
      By Don Hopkins
      ;login: The USENIX Association Newsletter
      Volume 12, Number 5; September/October 1987
      Summary of the Work-in-Progress talk given at the 1987 Summer
      Usenix Conference in Phoenix.

    Pies: Implementation, Evaluation, and Application of Circular Menus
      By Don Hopkins, Jack Callahan, and Mark Weiser
      (Paper in preparation. Draft available from authors.)

    A Comparative Analysis of Pie Menu Performance
      By Jack Callahan, Don Hopkins, Mark Weiser, and Ben Shneiderman
      To be presented at the CHI '88 conference in Washington DC.