# need help identifing IC's and symbols from a diagram

I am tring to make a circuit and need to purchase the required components but there are some IC's that I can not identify. I tried to google them up but I haven't found anything helpful yet.I also can't understand a few symbols on the diagram, and I want to know what they represent. the top 3 images are the components. the bottom 2 imaged are the symbols. what does the green triangle mean? im guessing that the pentagonal blue block is a direct input but i am not sure, also whats the red circle above it?. in the bottom most image, are the red and blue boxes (with 1 and 0's in them) input as well? and what are the smaller red and blue boxes under them? thats it for now. i'm sorry if these questions are very basic, i am new to this so bear with me.

• This isn't a hand-drawn schematic, it looks like it was generated by some kind of CAD schematic entry tool -- so perhaps there's a Bill of Materials or a Parts List among the project files? – MarkU Apr 4 '15 at 3:28
• Looks like U5 is a CD4532B CMOS 8-bit Priority Encoder ti.com/lit/ds/symlink/cd4532b.pdf When ordering, note there are different package types. PDIP is plastic dual-in-line package like you could plug into an old-school solderless breadboard, but SOIC / SO / TSSOP are surface-mount packages that must be soldered to a printed circuit board. – MarkU Apr 4 '15 at 3:35
• Looks like U19 is a CD4508B CMOS Dual 4-bit Latch ti.com/lit/ds/symlink/cd4508b.pdf This is a "dual" latch, so one of the latches is U19A and the other latch is U19B; both on the same silicon chip inside the same package. – MarkU Apr 4 '15 at 3:42
• The green triangles are probably "offpage" flags: every offpage flag with the net name "STATUS_2ND", on every page, are all connected together. And every offpage flag named "STATUS_1ST" are all connected. But nets with different names do not connect; only nets with the same name connect. – MarkU Apr 4 '15 at 3:46