Play Meter

Issue: 1981 May 01 - Vol 7 Num 8

6.
-6V
"Wire-up" the circuit in figure
2 on the breadboard. Before
1500
T
- 6V
I
I
I
I rL .o Ia
L1
__
IN91-4
j
Figure 1
B
X
0
0
0
9. Set S1 to the low (l) position
and S2 to the high position . The
lamp should remain lit.
When S2 is in the high (H) posi-
tion, a logic 1 is applied to input B.
The output has remained at a
logic 1. Again the operating
condition is shown in section 2 of
figure 6-3. The student should
state this logic condition on the
third row of the Truth Table.
Table for figures 1 & 2
-6V
-6V
r
I
I
~
~-r~-M.--.-------ox
-l- _:
7. Apply power, - 6V only. The
lamp should not light.
When both inputs are at a logic 0,
diodes 01 and 02 are both
reverse-biased and the output is
at a lofic 0. The first row of the
Truth Table states this operating
condition . The operating condi-
tion is illustrated in section 1 of
figure 6-3.
8. Set S1 to the high (H) posi-
tion . The lamp should light. When
S1 is in the high position , input A
is at a logic 1. This operating
condition is shown in section 2 of
figure 6-3 . The student should
state this operating condition on
the second row of the Truth
Table.
Truth Table
A
applying power, set switches S1
and S2 to the low (l) position .
Output
1
10 . Set S1 to the high (H)
position . The lamp should remain
lit. Both inputs are now at a logic 1
and the output is also at a logic 1.
Section 3 of figure 6-3 illustrates
this, operating condition . The
student should state this logic
condition in the bottom row of the
Truth Table.
When completed, the Truth Table
should be the same as the one
shown in figure 6-2.
The circuit has performed the
operation OR .
Figure 2
state this logic condition in the
third row of the Truth Table.
5 . Set S1 to the high (H)
position . The lamp should
extinguish .
Both diodes are now zero-biased
and the output has risen to a high
level or logic 1. This operating
condition is illustrated in figure 6-
5, section 3.
The stu dent should state the logic
condition in the bottom row of the
Truth Table. When completed,
the Truth Table should be the
same as the one shown in figure
6-4 .
This circuit has performed the
operation AND .
PLAY METER, May 1, 1981
Breadboard projects will appear
from time to time with various lessons
in th is course. Kurz Kasch has
suggested that operators and
technicians interested in completing
the breadboard projects could find
the suitable hardware being offered
by AP Products of Euclid, Ohio. AP
Products, which markets through
electronics hobby distributors and
radio and television parts supply
houses, offers an inexpensive bread-
board. Components for the individual
exercises can be gotten from Radio
Shack outlets or from the operator's
own inventory.
Next in the course series, which
continues in PLAY METER, will be
Diode- Transistor Gates (lesson
seven) and Resistor- Transistor Gates
(lesson eight).
Microcomputer
terms reference
For those who are not familiar with
the terms so often used in reference
to microprocessor technology, here
is a brief description of frequently
occurring ones.
RAM is read/write memory which
the microprocessor uses for tempor-
ary storage during the execution of a
program, and to remember which
images are where on the screen in
video games. Unfortunately, as soon
as the power is turned off, this type of
memory device "forgets" all the
information held in it.
Three main types of RAM are
used: dynamic ram, which must be
continually refreshed and is normally
used for memory mapping video
displays; static ram, which is more
expensive but doesn't need to be re-
freshed and is normally used as
"scratch pad;" and CMOS ram,
which is even more expensive but
needs very little current and is
normally used with batteries so that
it doesn't forget information when
the machine is turned off- i.e ., for
storing the electronic bookkeeping
information.
ROM is permanent memory which
is used to store programs and video
game characters. The information is
put in by the semiconductor
manufacturer and cannot be
changed.
PROM is a device which has
information put into it by the manu-
facturer and cannot then be
changed. It is frequently used for
program storage in early production
machines; color information de-
coding in games including Golaxians
and Moon Crestas; storing color
information, as in color Space
lnuaders; and for producing timing
signals and chip selects.
EPROM is a device which can
have information put into it by the
game manufacturers but can be later
"wiped clean" and reprogrammed.
Originally it was only used where
fairly small quantities of a particular
type of machine were to be manu-
factured, but it has become so cheap
recently that it is being used to store
programs and character information
in many current machines. The most
popular EPROMs are the 2708 which
has a capacity of 1K (1,024 bytes)
and the single rail 2716 which
contains 2K (2,048 bytes). Several
types of ROMs used by game
manufacturers can be easily
replaced by 2716 EPROMs.
- from Coin Slot Location
17
Standard Change sales up
New staffers
at Midway Mfg.
Two appointments for the in-house
team at Midway Manufacturing were
announced by Stan Jarocki for the
Franklin Park, Illinois games
producer.
Kathryn Novak is a new member
of the company's marketing team .
Her duties, said Jarecki, will be to
explore and ~xpand existing and
new markets for Midway coin-op
games.
In her position,working with
Marketing Vice President Jarocki,
she will apply her education in
marketing (at Arizona State
University) to reviewing data on
Midway games test markets, com-
piling and interpreting results, and
writing reports.
Also at Midway, Brian Osowski
has been appointed manager of its
parts department. He has been with
Midway since 1975 and comes with
qualifications from its Material
Control section .
Osowski's responsibilities will
include control, maintenance, and
dispatch of the numerous parts in a
complete working inventory for the
service of Midway games. V.P.
Jarecki said the backup team will be
"an efficient staff of computer
terminal operators, packers, and a
specialized system for the prompt
shipment of Midway parts through -
out the world .
Ms. Novak joined Midway in
March, 1980 to work in customer
service for the Electronic Compon-
ents Division. She was previously
employed by the McDonald
Corporation in Oakbrook, Illinois, to
prepare market and trading area
analysis, gather research, wqrk with
computer data and interpret the
results.

Quotables:
CRT Chairman Clarence James
on the CRT decision of raising
the per-jukebox fees from $8 to
$25 in 1982 and $50 in 1984: "I
thought it should be $130 a box."
Unquote.
18
S tandard Change -Makers ,· Inc .
officials in the company' 26th annual
sales and service meeting at
Indianapolis announced a expanded
new line of floor console changers,
the addition of models with
capacities of holding up to $2,500 in
change, and a new two -year
warranty on all major Standard
Change products.
John
S . Dugan, Standard's
national sales manager, said its line
of floor console changers has been
increased from two to seven models .
The two new super -capacity
changers are Series 8101 and 8001,
which can hold $2,500 (10,000
quarters) in the one large hopper.
They are designed for high volume
locations- amusement centers, coin
laundries, vending or transportation
locations, etc ., where there sis heavy
demand for change or an operator's
desire to fill equipment less
frequently .
Dugan said the new Series 8503
(with three hoppers) replaces
Standard's former Model 80, and
Series 86028 (with magazine
loading) replaces the older 68028
machine.
In announcing the two -year
warranty on all major products,
Dugan said: "For more than 25
years, although our official warranty
was for only one year, in practice we
have actually worked with our cus-
tomers for longer periods of time
whenever there was any legitimate
problem with our products. We ahve
always stood behind our products
and our new two-year warranty is
simply a reflection of that policy and
the confidence we have in our
products."
Dugan announced that despite the
current economic slump, Standard
Change -Makers' sales for 1980
continued to increase. Jack Ewald of
Los Angeles and Jack McElwaine of
Atlanta were cited as the company's
number one and two di s trict
managers, respectively , in sales
volume .
Panic 'timed' to fit locations
Universal U.S.A has announced
that it has made a hot game that was
modified according to location
demands.
Sales executive Hal Watner said,
"After our initi!'ll sampling of Space
Panic, we did a quite extensive
research program. Initial reports
were exciting but the most common
complaint was that although it was
the most played game , it gave the
players too much time for their
quarter . React ing to player ,
operator, and distributor suggestive
demands is a must in this industry.
"I am pleased to say that Universal
heard, listened, reacted, and has
modified Space Panic . After lengthy
test period of the new Space Panic ,
earnings have better than doubled
and now the only complaint is getting
more Space Panics delivered at a
faster rate," said Watner.
Shipments of Space Panic are
being made daily by the factory in
Santa Clara, California, he added.
PLAY METER CALENDAR
April3-5
NAMA Western Convention,
Phoenix Civic Center, Phoenix,
Arizona
April12-13
Milan Fair: park and amusement
rides, and coin-operated games
show, Milan, Italy
May 8-9
Ohio Music & Amusement Associa-
tion, annual convention and trade
show, Columbus Hilton Inn,
Columbus
May 8-10
Music and Amusement Association/
New York annual convention,
Kutsher's Country Club, Monticello
June 4-7
Music Operators of Texas, annual
meeting, Houston
June 5-6
Wisconsin Music Merchants Asso-
ciation annual convention, Holiday
Acres, Rhinelander
July 24-26
Amusement & Music Operators of
Tennessee, annual convention,
Hyatt Regency , Nashville
September 11-13
North Carolina and South Carolina
coin operators associations'
combined annual convention,
Carolina Inn, Columbia
PlAY METER , May 1, 1981

Download Page 17: PDF File | Image

Download Page 18 PDF File | Image

Future scanning projects are planned by the International Arcade Museum Library (IAML).

Pro Tip: You can flip pages on the issue easily by using the left and right arrow keys on your keyboard.