Getting Row Count From Other Excel File On Basis Of Multiple Columns

If I have 2 excel files. One with data about electronic equipment and one with more general counting data, i will explain..

For example the electronic equipment excel file contains data about notebooks, desktops, epads etcetera and also prices and how old they are etcetera. The excel file also has a column for serial number, so for example a notebook serial number looks like this: 23N34ERT3 and an epad SN looks like 25OKE445EE. IF i filter the SN on text and begins with: ??N then it will show me only notebook data(because the N stands for notebook). Same if I only want the Epad I just filter on ??OK, so i get all the epad data.

now for the general counting data file, in this file i actually want to put data which i get from the other electronic equipment file. For example i want this data to be retrieved:

a. total number of rows of notebooks from the electronic equipment file
b. total number of rows of epads from the electronic equipment file
c. how many rows there are for notebook that are 0 - 1 years old(in electronic equipment file there will be a column called product_Years so in this column you have data like: 1,4,12,3) + that are from model: A from the electronic equipment file
d.how many rows there are for notebook that are 2-3 years old + are from model:A from the electronic equipment file and then going on for 3-4 years model:SD etc......
e. in the electronic equipment file there are prices for each model, i also want to calculate the prices for each rows which i get here in the list above.. These rows must be calculated with prices from electronic equipment file

Is there any easier way than constant filtering and copy pasting the data?