http://www.ebuyer.com/product/135305

5.9''*6.6'' LED Moving Sign (CL-A24X80RG)
. Double Line semi-outdoor, Red LED Moving Sign
. Communication types: Direct PC via RS232 or RS485 cable
. Characters: 39, 2.1" characters
. PH: 7.62mm
. Matrix area: 24 x80 pixels
. Pixel color: tri-color LED lamp
. Memory capacity: up to 7000 characters
. Display modes: 16 display / transition methods
. Brightness: up to 120 NIT.2
. Power consumption: 110V AC at 25 watts
. Save and Display Multiple Messages
. Various Modes (Flicker, Pause, Continue, Time, Stop, Cartoon)
. One line with a big font size or two lines with a smaller font size
. Move, Scroll, Jump, Open, Cover, Immediate, Random (Up to 16 modes)
. Different Kinds Of Displaying Speed, Delay Time
. 150 moving frames can be stored and displayed for tricolor series
. Compatible with all languages, font styles & sizes, available from your windows
. Built in clock function
. Import / Export BMP files for easy editing
. Drawing tooling is available for special symbols, graphics or logos
. User friendly upload software using window platform

Features & Benefits:
. Save and Display Multiple Messages
. Various Modes Available (Flicker, Pause, Continue, Time, Stop, Cartoon)
. One line with a big font size or two lines with a smaller font size
. Move, Scroll, Jump, Open, Cover, Immediate, Random (Up to 16 modes)
. Different Kinds of Displaying Speed, Delay Time
. 150 moving frames can be stored and displayed for tricolor series
. Compatible with all languages, font styles & sizes, available from your windows
. Built in clock function
. Import / Export BMP files for easy editing
. Drawing tooling is available for special symbols, graphics or logos
. User friendly upload software using window platform        

Chips identified
-------

74HC245D Octal bus tranceiver; 3-state
http://www.alldatasheet.com/datasheet-pdf/pdf/15575/PHILIPS/74HC245D.html

ATF1508AS 15JC840704
http://www.atmel.com/dyn/resources/prod_documents/doc0784.pdf

Atmel AT89C55WD 24JI
http://html.alldatasheet.com/html-pdf/175143/ATMEL/AT89C55WD-24JI/157/1/AT89C55WD-24JI.html

ISSI is62lc256  7ou    

Other
-------
A small little watch button battery on the motherboard.
A red light on the motherboard which appears to indicate that the board
receiving power.