Apple II - Page 34

Chapter 1: Setting Up the Apple lie
Importont Make sure you always tighten these screws. Otherwise. connectors
can work loose and cause the system to stop, A secure connection
also helps prevent radio-frequency Interference,
On/all swltcnPower socket
Joysllck/hond
COnTrol connector
TI1C back panel of thc Apple lie has 12 openings, as shown in
Figurc 1-11.
Your Ap~e lie and lis peripherol devices were FCC-eertllied under
test corlditlons that Included use of shielded cables and
connectors between system components, Always use shielded
cables and connectors to reduce the possibility of causing
interference to radio. television. and other electronic devices.
Miniature jocks
for aUdio cossetle
input and output
OperUng for -------_,
15·pin connector
OPCrUng lor -,--------_,
25·pln connector
Operung for ------t-,
9·pin. clrcutar.
a! mini-circular
connec/or
-
-----~::~!o~.~.~~ .. ~~:.==::----J
Video Jack r
Figure 1-11
Bock panel of the Apple lie
Most interface cards and peripheral devices connect to each other
through D-shaped connectors at the ends of cables. You attach a 0-
shaped conneCtor by pressing the plug connector into the socket
connector and seoJring the connection by tightening eithcr lWO
ordinary screws or two thumbscrews.
16
Importonl
A shielded coble has INires
wrapped with 0 metol~c fall. The
wrap reduces the elfects of
radio-frequency
InterlElfence
beTWeen
1t1e coble and other
devices,