Tektronix DC 502 - Page 14

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Theory

of

Operation

—

DC

502

OVERFLOW:

This

output

is

HI

when

the

count

over



flows.

RESET:

This

is

a

dual-function

input/output

line.

It

provides

a

LO

output

during

reset,

or

can

be

used

as

an

external

reset

input.

Data

Lines:

1,

2,

4,

8

provide

BCD

output,

serial

by

digit,

from

the

currently

enabled

storage-register

latch.

Other

data

lines

include

a

LO

when

the

MHz

light

is

on,

a

LO

when

the

second

decimal

point

is

lit,

and

a

HI

when

the

left-side

digit

(MSD)

is

enabled.