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PsL Monthly 1994 February
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psl_9403
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DOS
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EDUCA
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WBOX.ZIP
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BOX.14
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1993-12-01
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198 lines
m18
O3
RF0 0 639 479
O1
T5
RE8 9 630 451
O0
T1
ti320 41 PLAZA26
WHEN YOU TURN
O1
ti319 40 PLAZA26
WHEN YOU TURN
O0
ti320 81 PLAZA26
THE POWER ON
O1
ti319 80 PLAZA26
THE POWER ON
O0
te30 110 DEFAULT
As soon as you turn the computer on
the BIOS chips come to life. BIOS
stands for Basic Input Output
System. The computer has one or
more of these ROM (Read Only
Memory) chips. The BIOS is the
first step in telling the computer
who it is. The Central Processing
Unit (CPU chip) is the main
thinking part of the computer, but
so far, it has no thoughts to think
about. The BIOS hooks it up to
other parts, places where thoughts
can be stored. The BIOS tells it
how to talk with the disk drives,
the RAM (Random Access Memory), the
keyboard and the monitor.
~
te355 250 default
The computer wakes up and
starts looking around to see
what parts it has. It learns
how to read input from the
keyboard and how to send a
picture to the monitor. Then
it checks to see how many and
what kind of disk drives it
has. You see each drive light
momentarily flash on.
~
O8
RF425 143 543 182
O7
RE424 143 545 182
RE418 139 545 182
XxA
P419 140
P420 141
P421 142
P422 142
P423 143
P423 181
P422 180
P421 180
P420 179
P419 178
XxZ
O3
XxA
P418 179
P418 178
P418 180
P418 181
P418 182
P419 182
P420 182
P421 182
P422 182
P423 182
XxZ
XxA
P543 139
P544 139
P545 139
P545 140
P545 141
P545 142
P542 139
XxZ
O7
XxA
P542 140
P543 141
P544 142
XxZ
O0
F421 151
F444 140
O14
XxA
XxZ
O3
XxA
P540 140
P540 139
P541 139
P541 140
P542 140
P543 141
P542 141
XxZ
O7
XxA
P540 140
P541 141
P542 142
P543 142
XxZ
O14
T3
L534 140 534 131
L534 131 530 130
L526 140 526 132
L526 132 523 130
KC519 126 539 142 503 142
KC504 127 539 141 472 141
KC471 128 539 142 423 142
L532 182 532 188
L531 188 529 188
KC525 180 537 194 517 194
KC519 178 535 192 503 192
KC502 177 537 193 470 193
KC471 178 536 192 423 192
O7
RF460 146 507 179
O0
T1
RE459 146 509 180
O8
C484 163 10
XxA
XxZ
O7
XxA
P484 152
P485 152
P487 153
P488 153
P490 154
P491 155
P492 157
P493 158
P494 160
P494 161
P494 163
P494 164
P494 166
P493 167
P492 169
P492 170
P490 172
P489 173
P487 173
P486 174
P484 174
P483 174
P481 173
P480 173
P478 172
P477 171
P476 169
P475 168
P474 166
P474 165
P474 163
P474 162
P474 160
P475 159
P476 157
P476 156
P478 154
P479 153
P481 153
P482 152
XxZ
O0
XxA
ti478 206 DEFAULT
A BIOS Chip
XxZ