Initialized repository and added 42-year data.

40yrs/plot.gnuplot

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+
+
+set terminal postscript eps color enhanced #font 'CourierBold,14'
+set output "40-years-processor-trend.eps"
+
+set rmargin at screen 0.64
+
+set style line 1 lt 1 ps 1 pt 13 lc rgb "#000000"
+set style line 2 lt 1 ps 1 pt 5  lc rgb "#008800"
+set style line 3 lt 1 ps 1 pt 7  lc rgb "#0000BB"
+set style line 4 lt 1 ps 1 pt 9  lc rgb "#CC6600"
+set style line 5 lt 1 ps 1 pt 11 lc rgb "#BB0000"
+
+
+set size 0.8
+set size ratio 0.63
+
+set border lw 1.5
+
+set xlabel "Year"
+
+set grid
+unset key
+set logscale y
+set format y "10^{%T}"
+
+set xrange [1970:2020]
+set yrange [0.2:1e7]
+unset mytics
+
+set label "Number of"     at 2021,2e1 tc ls 1
+set label "Logical Cores" at 2021,6.6e0 tc ls 1
+
+set label "Frequency (MHz)"    at 2021,3e3 tc ls 2
+
+set label "Single-Thread"      at 2021,1.5e5 tc ls 3
+set label "Performance"        at 2021,5e4 tc ls 3
+set label "(SpecINT x 10^{3})" at 2021,1.9e4 tc ls 3
+
+set label "Transistors"   at 2021,6e6 tc ls 4
+set label "(thousands)"   at 2021,2e6 tc ls 4
+
+set label "Typical Power" at 2021,3e2 tc ls 5
+set label "(Watts)"       at 2021,1e2 tc ls 5
+
+set title "40 Years of Microprocessor Trend Data"
+
+set label "Original data up to the year 2010 collected and plotted by M. Horowitz, F. Labonte, O. Shacham, K. Olukotun, L. Hammond, and C. Batten" at 1970,6e-3 tc ls 1 font ",8"
+set label "New plot and data collected for 2010-2015 by K. Rupp" at 1970,3e-3 tc ls 1 font ",8"
+
+plot \
+ "cores.dat"        using 1:2 ls 1 with points, \
+ "frequency.dat"    using 1:2 ls 2 with points, \
+ "specint.dat"      using 1:2 ls 3 with points, \
+ "transistors.dat"  using 1:2 ls 4 with points, \
+ "watts.dat"        using 1:2 ls 5 with points