Updated 2014-10-26 09:13:47 by gold

Electronics Burn-in Acceleration Factor and eTCL Slot Calculator Demo Example  edit

This page is under development. Comments are welcome, but please load any comments in the comments section at the bottom of the page. Please include your wiki MONIKER in your comment with the same courtesy that I will give you. Its very hard to reply intelligibly without some background of the correspondent. Thanks,gold

gold Here is some eTCL starter code for calculating the burn-in acceleration factor. Most of the testcases involve replicas or models, using assumptions and rules of thumb.

Pseudocode and Equations

  price? = raw materials + labor  +  profit
  price? = raw materials + heat process
  price? = raw materials + labor 
  average price per unit  = revenue  / units sold

Testcases Section

In planning any software, it is advisable to gather a number of testcases to check the results of the program. The math for the testcases can be checked by pasting statements in the TCL console. Aside from the TCL calculator display, when one presses the report button on the calculator, one will have console show access to the capacity functions (subroutines).

Testcase 1

table 1printed in tcl wiki format
quantity value comment, if any
testcase number:1
150.0 :test hours
60.0 :normal operating temperature centigrade
150.0 :higher test temperature centigrade
0.4 :electron volt (silicon=.4)
30.0 :answers: temperature acceleration factor
30.0 :temperature acceleration factor
150.0 :test at higher temperature hours
2929.05289702299 :effective hours


Testcase 2

table 2printed in tcl wiki format
quantity value comment, if any
testcase number:2
300.0 :test hours
55.0 :normal operating temperature centigrade
160.0 :higher test temperature centigrade
0.4 :electron volt (silicon=.4)
30.0 :answers: temperature acceleration factor
30.0 :temperature acceleration factor
300. :test at higher temperature hours
9343. :effective hours


Testcase 3

table 3printed in tcl wiki format
quantity value comment, if any
testcase number:3
300.0 :test hours
55.0 :normal operating temperature centigrade
160.0 :higher test temperature centigrade
0.4 :electron volt (silicon=.4)
30.0 :answers: temperature acceleration factor
30.0 :temperature acceleration factor
300.0 :test at higher temperature hours
9343.54850428406 :effective hours


Screenshots Section

figure 1.


References:

  • Stat

Appendix Code edit

appendix TCL programs and scripts

        # pretty print from autoindent and ased editor
        # burn in acceleration calculator
        # written on Windows XP on eTCL
        # working under TCL version 8.5.6 and eTCL 1.0.1
        # gold on TCL WIKI, 15oct2014
        package require Tk
        namespace path {::tcl::mathop ::tcl::mathfunc}
        frame .frame -relief flat -bg aquamarine4
        pack .frame -side top -fill y -anchor center
        set names {{} {test hours:} }
        lappend names {normal operating temperature centigrade :}
        lappend names {higher test temperature centigrade: }
        lappend names {electron volt (silicon=.4) :}
        lappend names {answers: temperature acceleration factor :}
        lappend names {temperature acceleration factor: }
        lappend names {test at higher temperature hours : }
        lappend names {effective hours :}
        foreach i {1 2 3 4 5 6 7 8} {
            label .frame.label$i -text [lindex $names $i] -anchor e
            entry .frame.entry$i -width 35 -textvariable side$i
            grid .frame.label$i .frame.entry$i -sticky ew -pady 2 -padx 1 }
        proc about {} {
            set msg "Calculator for Burn In Acceleration calculator
            from TCL WIKI,
            written on eTCL "
            tk_messageBox -title "About" -message $msg }       
       proc calculate {     } {
            global answer2
            global side1 side2 side3 side4 side5
            global side6 side7 side8
            global testcase_number
            incr testcase_number 
            set side1 [* $side1 1. ]
            set side2 [* $side2 1. ]
            set side3 [* $side3 1. ]
            set side4 [* $side4 1. ]
            set side5 [* $side5 1. ]
            set side6 [* $side6 1. ]
            set side7 [* $side7 1. ]
            set side8 [* $side8 1. ]
            set test_time $side1 
            set tempkelvin1 [+ $side2 273. ]
            set tempkelvin2 [+ $side3 273. ]
            set electron_volt $side4
            set boltzman_constant 0.000086
            set term2 [- [/ 1. $tempkelvin1 ] [/ 1. $tempkelvin2 ] ]       
            set term3 [* $electron_volt $term2 ]
            set term4 [/ $term3 $boltzman_constant ]
            set acceleration_factor [exp $term4 ]
            set $side5 $acceleration_factor
            set $side6 $acceleration_factor 
            set side7 $test_time
            set effective_burn [* $test_time $acceleration_factor 1. ] 
            set side8 $effective_burn       
                  }
        proc fillup {aa bb cc dd ee ff gg hh} {
            .frame.entry1 insert 0 "$aa"
            .frame.entry2 insert 0 "$bb"
            .frame.entry3 insert 0 "$cc"
            .frame.entry4 insert 0 "$dd"
            .frame.entry5 insert 0 "$ee"
            .frame.entry6 insert 0 "$ff" 
            .frame.entry7 insert 0 "$gg"
            .frame.entry8 insert 0 "$hh" 
             }
        proc clearx {} {
            foreach i {1 2 3 4 5 6 7 8 } {
                .frame.entry$i delete 0 end } }
        proc reportx {} {
            global side1 side2 side3 side4 side5
            global side6 side7 side8 
            global testcase_number
            console show;
   puts "%|table $testcase_number|printed in| tcl wiki format|% "
            puts "&| quantity| value| comment, if any|& "
            puts "&| testcase number:|$testcase_number | |&"
            puts "&| $side1 :|test hours|   |&"
            puts "&| $side2 :|normal operating temperature centigrade | |& "
            puts "&| $side3 :|higher test temperature centigrade | |& "
            puts "&| $side4 :|electron volt (silicon=.4) |  |&"
            puts "&| $side5 :|answers: temperature acceleration factor |  |&"
            puts "&| $side6 :|temperature acceleration factor| |& "
            puts "&| $side7 :|test at higher temperature hours|  |&"
            puts "&| $side8 :|effective hours |  |&"

         }
        frame .buttons -bg aquamarine4
        ::ttk::button .calculator -text "Solve" -command { calculate   }
        ::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 150.0 60.0 150.0 0.4  30.0 30.0 150. 2929.}
        ::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 200.0 60.0 180.0 0.4  30.0 30.0 200. 8089.}
        ::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 300.0 55.0 160.0 0.4  30.0 30.0 300. 9343.}
        ::ttk::button .clearallx -text clear -command {clearx }
        ::ttk::button .about -text about -command about
        ::ttk::button .cons -text report -command { reportx }
        ::ttk::button .exit -text exit -command {exit}
        pack .calculator  -in .buttons -side top -padx 10 -pady 5
        pack  .clearallx .cons .about .exit .test4 .test3 .test2   -side bottom -in .buttons
        grid .frame .buttons -sticky ns -pady {0 10}
        . configure -background aquamarine4 -highlightcolor brown -relief raised -border 30
        wm title . "Burn-in Acceleration Factor Calculator "

Pushbutton Operation

For the push buttons, the recommended procedure is push testcase and fill frame, change first three entries etc, push solve, and then push report. Report allows copy and paste from console.

For testcases in a computer session, the eTCL calculator increments a new testcase number internally, eg. TC(1), TC(2) , TC(3) , TC(N). The testcase number is internal to the calculator and will not be printed until the report button is pushed for the current result numbers. The current result numbers will be cleared on the next solve button. The command { calculate; reportx } or { calculate ; reportx; clearx } can be added or changed to report automatically. Another wrinkle would be to print out the current text, delimiters, and numbers in a TCL wiki style table as
  puts " %| testcase $testcase_number | value| units |comment |%"
  puts " &| volume| $volume| cubic meters |based on length $side1 and width $side2   |&"  

gold This page is copyrighted under the TCL/TK license terms, this license.

Comments Section edit

Please place any comments here, Thanks.