<div>
<div class="content wysiwyg-content">
I have a very basic HP LaserJet 4 printer. &nbsp;It's set up to use PCL 6 over TCP/IP. &nbsp;Is it reasonable to regard sion PCL as an upper-level layer in the OSI protocol stack? &nbsp;If so, what layer? &nbsp;
</div>
</div>


I have a very basic HP LaserJet 4 printer.  It's set up to use PCL 6 over TCP/IP.  Is it reasonable to regard sion PCL as an upper-level layer in the OSI protocol stack?  If so, what layer?  

PCL and OSI Stack

System Utilities are a type of system software used to support the computer infrastructure, distinguishing it from application software which is aimed at directly performing tasks that benefit ordinary users. Commonly used utilities include password managers, disk managers, system monitors, data synchronization tools, security and antivirus software and editors.

System Utilities

A printer is a peripheral which makes a persistent human readable representation of graphics or text on paper or similar physical media. Traditional printers are being used more for special purposes, like printing photographs or artwork, and are no longer a must-have peripheral; 3D printing has become an area of intense interest, allowing the creation of physical objects. An image scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Hand-held scanners, where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications.