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MS-DOS Executive
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CALCULATOR.EXE
CALENDAR.EXE
CLOCK.EXE
CONTROL.EXE
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Calculator
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0
C
+/-
%
√
/
7
8
9
*
=
4
5
6
-
=
1
2
3
+
=
0
.
C
←
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Calendar
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December 2023
Sun
Mon
Tue
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Clock
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00:00
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Control Panel
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