I am making a spread sheet for all my college homework and in one column I have the dates of when things are due but is there a formula I can use that will automatically change the cell colour when the date is near – maybe to red… like a traffic light system so I [...]
Two dual-carriage roads meet at a T junction, a. Three trafficlights (E, W and S) placed at this junction are to be set up and controlled by a digitallogic system.In this assignment, students are required to design the timing and logic circuits required for this system. As this is an open-ended design problem, it is [...]
The US easily captured and killed a Head of State; Saddam Hussain. But haven’t managed to capture OBL, who is hidding in some cave (can’t be that many!) in Afganastan. They can topple a State but can’t capture a gurrilla in a cave, who unlike SH planned 9/11. Strange. Maybe its of more benifit to [...]
I know about the system giving a red, amber or green rating to products based on their nutritional content, but I can’t find anything on the FSA’s website to tell me how much salt makes products have these ratings.
Can anyone tell me the exact values for making these ratings? E.g. green= salt less than 0.5g [...]
How many towns are their in this country that live for traffic lights that are designed to discourage driving by making journeys slow and so the councils can show these fantastic statistics on low traffic volumes but they fail to highlight that 5,000 cars a day spending 30 minutes travelling through a town produces probably [...]
e.g India and China
Is there some kind of elaborate system of traffic lights to enable border-crossing vehicles to change sides? A bridge, maybe?
A bridge
Good Question by the way, I’ve actually learnt something intriguing today
A T-junction with three traffic lights (E,W & S) they are to be setup and controlled by a digital logic system.
The key components are
- a ‘555′ timer IC
- a CMOS 4017 decade counter
put together like so http://www.kpsec.freeuk.com/projects/trafficlight.htm
For a T-junction, you have to connect more LEDs, when branch is red then through-road [...]
How many people have the Opticom System in their towns or the towns surrounding them? If so How many towns around you have them? (OptiCom is a system designed to change the traffic light usually to green when a Fire engine, ambulance or police car approaches. It usually has a little black sensor and [...]
The charging system had been failing for a while, but since I never drove far, it kept the battery mostly charged.
I recently took a longer trip, and my car died twice at traffic lights due to no power. The battery was completely dead. The charging light comes on after 5 minutes or so of driving, [...]
Gas prices show no sign of going down, but what if changing traffic lights could save you time and money?
Since the 1990s, the Mid-America Regional Council and its partners have been working on a program called Operation Green Light. It is designed to help reduce the stop-and-go traffic on arterial roads during rush hour.
The program [...]
