Flat screen TVs for display info

Operating a business and need to set up 4 flat screen TVs with separate information on each. Each tv will have separate information on it from a web site displayed on the tv. Not sure if to purchase smart TVs and run each one through this independently. Or should I set up 4 small pc connected to each tv via hdmi cable. The issue I have with this is then I would need 4 keyboards and mouse. Each web site will need to be entered at the start of each day and logged in.

If you can help with any suggestions that would be great.