Star Tech Journal

30
STAR*TECH JOURNAL/JANUARY 1984
heJ;
rus
The names of various Videodisc Game
Manufacturers comprise this issue's word
puzzle. Find and encircle these words as
they appear below. They run vertically,
horizontally, diagonally and sometimes
backwards.
VIDEODISC GAME
MANUFACTURES
N D J T E C X E C M
N A A W E C S E J J
T
Y
D
A
G
P
L
P
N A W M C
W F F V I
W Q L A N
L O T J O
N
S
Y
T
R
D
Y
N
S
R
S
N
T T N A T F R S N A
A J. R
E I A
A S G
S T D
T P V
R W X
E A B
F V T
KB
E H
R X
T I
U Z
M U
I R
S V
I TD L K
X A K W C
B M T G R
X E N U I
B N A S E
K I Q L S
I C L M D
N S A C L
Q U N S R Y
I
J Z Z
C X N E L L P T O Z
R V T A L Y U X X W
TSMIIPMZYC
J
IN
75. Why are virtually all switching-type integrated circuits called "digital"?
a. They are about the size and shape of a digit or finger.
b. They process digital information.
c. They switch large working devices on and off.
d "Di" in "digital" means "two," referring to the two purposes of electricity
in systems - processing information and doing work.
e. All but b above.
76. Digital electronic systems are designed by putting together building blocks
available in integrated-circuit form which can be classified as:
a. Processing information or doing work.
b. Positive or negative logic.
c. Decision-making ( or "logic") type, consisting mainly of gates; or memory-
type, containing principally flip-flops.
d Functional and electrical.
e. Switching and amplifying.
77. The meaning of the letter symbols "H" and "L" in functional descriptions
( truth tables) of digital building blocks is:
a. Higher voltage and lower voltage, referring to the two binary digital signal
levels.
b. Higher power and lower power, referring to these two classifications of
semiconductor devices.
c. High frequency and low frequency.
d High current and low current
e. High speed and low speed.
78. If a certain circuit acts as an OR gate when used with negative logic (H = 0, H
= 1 ), what function will it perform when used with positive logic (H = l, L= 0)?
a. AND
b. OR
c. NOT
d NAND
e. NOR
lnQuizitive Answers (December)
70)c
71) e
72) e
73) a
74)e
R W H O N D G G S
ATARI
TAITO
WILLIAMS
BALLY
MYLSTAR
CINEMA TRONICS
FUNAI
DATAEAST
STERN
SIMUTREK
Here is the answer key
to December's puzzle:
TRANSISTOR TERMS
•
M O S F E T • E •
•
•
•
• • •
• M
• • • • I • • •
•
• T
•
• G •
••~E••T•R•
• • R • • E ,• 0
T
N
C
B
C
H
0
I
E
p L
I
A
T E N
L 0
N
C
L
0
E
A R N
C D
R
u R u L
J
A
0
I
s E
N
s
A
B
. . . . . . . . . . .
. . . . . . . . . . . .
. . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . .
. . . . . . . . .
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monitors), Electronic Pinball Systems (Electronic digital systems), Trouble-
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