The calculator tag has no wiki summary.
-1
votes
1answer
78 views
Calculating the peak source data rate [closed]
For an exam I am soon to sit there is a question I have no idea how to answer, it is in past papers but there is no explanation to work it out in our lecture slides. The question is:
A company ...
0
votes
2answers
144 views
Calculating “useable amps”
We use a 1650 mAh capacity LiPo battery.
It has a 2.5volt undercurrent protection cutoff set.
Our device uses a CONSTANT 5mA of draw UNTIL the battery
drops down to 3.2V, at which time the system ...
-2
votes
2answers
87 views
how can i connect my usb port to ATmega16
I have a calculator circuit and i want to be connected to pc with a USB port,this circuit contains a ATmega16 micro,my question is how can i see dats that keypad sends in both calculator lcd an pc ...
0
votes
2answers
119 views
How to design voltage ladder on ADC for non linear purposes
I'm designing a 4-bit ADC for a project that receives a reference voltage that ranges from 1.0 to 1.25. The problem is, it's not a linear variation, as in 0001 can be 1.05V, 0010 1.1V but 0011 could ...
-3
votes
1answer
207 views
Arduino 3 digit LCD calculator
We would like to build a calculator using Arduino which uses 3 digit LCD and a keypad similar to digital phones. (# for plus , * for minus) Which components and way is good enough to not to run out of ...
1
vote
0answers
91 views
Impedance calculators differ pretty much?
As you can see here to calculators I found show huge difference or didn't I set it up correctly? I didn't found hints on possible validity limits. Can someone say if one of those given out results ...
-3
votes
1answer
271 views
Electrical Engineering Calculator [closed]
This is not a typical question for help on a design. My question is, what calculator would you guys suggest for a student in the electrical engineer field that would help me do most calculations? ...
5
votes
3answers
394 views
Designing a simple ALU
I need to design an ALU with two 8-bit inputs A and B and control inputs x, y, and z that supports the following operations:
...
3
votes
2answers
444 views
What exactly is happening when a graphing calculator LCD malfunctions when batteries are weak or overloaded?
I'm a beginner in electrical engineering, and I have limited knowledge of how electronics work internally. I'm trying to understand some odd LCD behavior when the batteries are weak or subjected to a ...
1
vote
1answer
502 views
How to calculate Vout in this resistors network?
How do I calculate Vout in terms of Vin and R1,...R5?
Vin----+-------+
| |
R4 R1
| |
+--R5---+--Vout
| |
R3 R2
| |
...
10
votes
10answers
17k views
How to build a calculator?
I'm a newbie in electronics. I'm trying to build a calculator from scratch as a simple project and side hobby to keep me busy.
My goal is to build a simple calculator, not a scientific or graphing ...
