Memorex CP8 TURBO UNIVERSAL REMOTE CONTROL Instrukcja Użytkownika Pobierz pdf (Strona 30)

100

I I

I I I

I I

h -ANY NUMBER

ROLLS

-1

O7 I I

1 I

I-

1 I

I I

-I-I--1

I I I

CD 7

I I I

"CLOCKING

OUTPUTS"

Fig.

2 -Shown here

are the various latch

outputs

of U7.

The

two counts

are fed

into

latches

U7a,

U7b, and

U7c as

the decoded

output of

U8.

Recall

that all

of their

outputs were

initially

set

to zero at

the start

the game.

The outputs

those

latches

are

used

throughout

the

circuit

to switch

gates

and off

as the

game progresses.

Figure

2 shows

the various

latch outputs

U7 for clarification,

the

operation

which

becomes

easier

to understand

as the

circuits

using

those

signals

are analyzed.

Counting

Integrated

circuits

U3 and

(4017

decade

counter /divid-

ers) were

chosen over

BCD counters

because

they can be

programmed

to read

a repetitious

count of 1

to 6

without

zero status.

using the outputs

0 to 5

and using output

6 to

reset the

counter,

have

our one

six

counter

with

no zero.

The

triple three

-input OR gates,

U5 and U6, decode

and

change the

decade outputs

of U3

and U4 to BCD

outputs for

the two

dice -display

circuits,

consisting of

LEDI to LED7

and LED8

to LED14, respectively.

The BCD

outputs

of U3 and

U4 are fed

to the A and B

inputs

of U9 (a 4008

four -bit

full adder).

Since

have

counts

over 6 from

either die, two

inputs (pin I

and pin 15 of

119)

of the adder were

grounded.

The outputs

U9 is the

BCD

total

count for both

dies. That

count is

fed to U10 (a

4076

tri -state D -type

flip -flop).

Referring

to Fig. 2,

UIO is

clocked

once at

the end of

the first number

input

and puts the

point

number

into memory.

After

storing that number

memory,

the number is iso-

lated

(within

U10) from the

changing numbers

on the

input of

the

latch. The

number in

memory

is also applied

to a set

inputs

the magnitude

comparator,

UI 1. If,

on a succeeding

roll,

the identical

BCD

number is

rolled

(matching

the

number

memory),

a positive output

is produced

at pin

6 of

UI1.

During the

dice roll, a

control signal

applied to pin

3 (the

clock input at point

inhibits

UI1. That keeps

the com-

parator

from picking

up a number

match while

the

dice are

rolling.

Once the dice

have stabilized,

if the number

in memory

equals the

number

rolled, the

output of

U11 at pin 6 goes

high.

That high is

applied to

pin I of Ul5d (1/4 4081

quad

two -

input AND gate),

which

toggled by the clocked

logic

only

after the second

number

is displayed.

Gate Ul5d keeps

the

circuit from

displaying

a "win" on

the first roll. The

output

signal of

Ul5d at pin 3 is

used to turn on

LED16, the "WIN"

lamp when

a match

occurs after the

first roll.

The various

numbers

rolled

are also applied

(in BCD) to

the 4 -bit latched /4 -to

-16 line

decoder,

U12, and are accepted

U12 only

when

a positive gate

(from U7d) is applied

to pin

1. That

occurs at the

end of each roll

(see Fig. 2).

The S2,

S3, and S12 outputs

(at pins

10, 8, and

14), are fed

U14b at pins

and 5,

respectively. The

S7 and

Sil

outputs

of U12 at pins

4 and 19 (respectively)

are fed to U I4c.

Those

two outputs

are fed

to the "WIN"

and LASE

lamps

through AND gates

Ul5a

and U15b.

Referring

to the waveforms

of Fig. 2, it

can be

seen that

those

gates are turned

off after

the first

roll. That action

lets

you

win

(if you roll 7

or 11) or lose

(if you

roll a 2, 3, 12,)

the first

roll. One leg of

gate

U15c (pin 5) is

tied to the pin 4

PARTS

LIST

FOR THE

COMPUTERIZED

CASINO DICE

GAME

SEMICONDUCTORS

D1-

D9 -1N914

(or

equivalent)

small signal diodes

LED1 -LED22

-Jumbo

light-

emitting

diode

(any

color)

U1- CD4584 hex

Schmitt-

trigger inverting

buffer,

integrated

circuit

U2, U15,

U16- CD4081 quad

AND gate,

integrated

circuit

U3, U4,

U8- CD4017

decade

counter

/divider,

integrated

circuit

U5,

U6, U14,

U17- CD4071 quad

OR gate,

integrated

circuit

U7-

CD4043 quad R/S

flip -flop, integrated

circuit

U9-

CD4008 4 -bit full

adder, integrated

circuit

U10-

CD4076

quad tri -state

D -type flipflop,

integrated

circuit

U11-

CD4063 4 -bit

magnitude

comparator,

integrated

circuit

U12-CD4514

1 of 16

decoder, integrated

circuit

U13- 74C373

Octal latch, integrated

circuit

U18

-7805 5 -volt, 1 -A

voltage regulator,

integrated

circuit

RESISTORS

(All resistors

are'

/4 -watt

units unless

otherwise noted.)

R1 -R22

-470

-ohm

R23-

R33- 10,000

-ohm

R34,

R35

-680

-ohm

R36-

27,000

-ohm

R37- 1-

Megohm

CAPACITORS

C1-

100

11F, 16 -WVDC

electrolytic

C2-

C4- 4,7 -µF, 16

-WVDC

electrolytic

C5-

C13-O.1 -µF,

ceramic

disc

C14- 100

-µF,

25 -WVDC

electrolytic

ADDITIONAL

PARTS

AND

MATERIALS

Printed

-circuit

perfboard

materials,

enclosure,

sockets, Wall -type

power

supply

(

#DC1210),

wire,

solder, hardware,

etc.

NOTE: All integrated

circuits

are available from

Jameco

Electronics,

1355

Shoreway Rd.,

Belmont,

94002,

(415)

592 -8097;

Digi

-Key

Corp. PO Box

677, Thief

River

Falls, MN

56701, (800)

344

-4539.

and S2 (Panasonic

#EVQ-

PAR11K)

are available

from

Digi

-Key

Corp.

Box

677,

Thief

River

Falls,

56701, (800)

344 -4539.

12 -volt

wall -type

power

supply (

#DC1210)- Jameco

Electronics,

1355

Shoreway Rd.,

Belmont,

94002,

(415)

592

-8097.

Double

-sided

board with

drilled

and plated- through

holes

$22.50;Red

plastic

front

panel,

drilled

and silk

screened

$10.00, plus

$2.00 each

shipping and han-

dling- Electronic

Enterprises,

3305,

Pestana

Way,

Livermore,

CA 94550.

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