1st amendment text: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
The Press is generally understood as a news service, and this definition has not changed, the medium is different but otherwise unchanged.
Speech is understood as what a person says, in writing or speaking, this too has not changed, as I am technically "writing" this text in a readable form for anyone to read.
The Second Amendment text:
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.
The definition of "Arms" has changed, was weaponry has gotten vastly more variable, from repeating arms to thermobaric/nuclear weapons which can kill thousands in seconds. The Pucke Gun, as referenced is a machine gun in the modern sense, but its impossible to tell whether or not any of the founding fathers knew about it, its not like today where we saw China's new stealth aircraft and in days time everyone knew about it, and neither has it seemed to have been in regular, prolonged use by any military. Now I'm sure you wouldn't want RPG-7s available to buy at your Joe Schmoe gun store for what their actual cost is, because any crazy would be able to afford and to blow apart a crowd in seconds. If the constitution were written in modern day I sure hope that the founding fathers wouldn't allow just anyone to own a GAU-12 for example, it'd be total anarchy if that were the case.