It is a design of coded lock on Basys2 board.It can be set,unlocked and marked by digital tube.

test2\coregen_xil_7752_28.cgc
.....\coregen_xil_7752_28.cgp
.....\iseconfig\lock.xreport
.....\.........\test2.projectmgr
.....\lock.bgn
.....\lock.bit
.....\lock.bld
.....\lock.cmd_log
.....\lock.cpj
.....\lock.drc
.....\lock.lso
.....\lock.ncd
.....\lock.ngc
.....\lock.ngd
.....\lock.ngr
.....\lock.pad
.....\lock.par
.....\lock.pcf
.....\lock.prj
.....\lock.ptwx
.....\lock.stx
.....\lock.syr
.....\lock.twr
.....\lock.twx
.....\lock.ucf
.....\lock.unroutes
.....\lock.ut
.....\lock.vhd
.....\lock.xpi
.....\lock.xst
.....\lock_bitgen.xwbt
.....\lock_envsettings.html
.....\lock_guide.ncd
.....\lock_map.map
.....\lock_map.mrp
.....\lock_map.ncd
.....\lock_map.ngm
.....\lock_map.xrpt
.....\lock_ngdbuild.xrpt
.....\lock_pad.csv
.....\lock_pad.txt
.....\lock_par.xrpt
.....\lock_summary.html
.....\lock_summary.xml
.....\lock_usage.xml
.....\lock_vhdl.prj
.....\lock_xst.xrpt
.....\pa.fromHdl.tcl
.....\.lanAhead_run_1\planAhead.jou
.....\...............\planAhead.log
.....\...............\planAhead_run.log
.....\...............\test2.data\constrs_1\fileset.xml
.....\...............\..........\sources_1\fileset.xml
.....\...............\..........\wt\webtalk_pa.xml
.....\...............\test2.ppr
.....\test2.gise
.....\test2.xise
.....\test2_ise12migration.zip
.....\usage_statistics_webtalk.html
.....\webtalk.log
.....\webtalk_pn.xml
.....\xlnx_auto_0_xdb\cst.xbcd
.....\_ngo\netlist.lst
.....\.xmsgs\bitgen.xmsgs
.....\......\ngdbuild.xmsgs
.....\......\par.xmsgs
.....\......\pn_parser.xmsgs
.....\......\trce.xmsgs
.....\......\xst.xmsgs
.....\planAhead_run_1\test2.data\constrs_1
.....\...............\..........\sources_1
.....\...............\..........\wt
.....\...............\test2.data
.....\ipcore_dir
.....\iseconfig
.....\planAhead_run_1
.....\xlnx_auto_0_xdb
.....\_ngo
.....\_xmsgs
test2

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