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102 February 2007
I am a member of an Old Order
Mennonite Church. We do not use
PCs, TVs, or the Internet, therefore, I
have three somewhat unusual requests.
1. Is it possible to program microcontrollers without a PC? (A variety of
sizes, say from eight DIP through 40
DIP.) Is any family of microcontrollers
better suited for non-PC programming?
Are there any books that would help?
2. Is there any stand-alone RS-232-
C Terminals available anymore? I need
one to program my late 80’s Premier
2460 phone system. Could one also be
used to program microcontrollers?
Can someone tell me how to build
one? I would prefer one that has a
small QWERTY keyboard and an
alpha-numerical LCD screen. The
phone manual mentions a TI Silent 700
3. How can I send/receive email
using my fax machine?
#2071(1-3) Leroy Sensenig
Penn Yan, NY
I'm looking for a circuit diagram
that will let me know the status of a
fuse in a 12 VDC circuit and 120 VAC
circuit. It must light an LED to show that
the fuse has blown. It would be used to
monitor automotive fuses and the fuses
for an amateur radio station.
#2072 Bradley Flener
Central City, KY
Is there something that can be
attached to the wire that goes from my
earplug to the external speaker of my
police scanner that will diminish the
high pitch sounds of fire calls? When
an ambulance or fire station is alerted it
is preceded by a series of high pitch,
ear-piercing sounds which I want to
I’m looking to buy a YDA135
sound processor chip, but cannot find a
supplier to purchase a few.
#2074 Rocky Misner
I need an alternator circuit that will
allow me to charge an eight-volt lead-acid battery in a WWII army vehicle
using a standard automobile alternator.
#2075 Walter Bringsauf
[#9062 - September 2006]
I want to use an accelerometer as
a motion sensor for a vehicle security
Can someone advise me on which
type (capacitive, temperature, etc.) is
good for this application?
Analog Devices has an application
note on using one of their accelerome-